CN105102249B - Vehicle air conditioner - Google Patents

Vehicle air conditioner Download PDF

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Publication number
CN105102249B
CN105102249B CN201480018053.4A CN201480018053A CN105102249B CN 105102249 B CN105102249 B CN 105102249B CN 201480018053 A CN201480018053 A CN 201480018053A CN 105102249 B CN105102249 B CN 105102249B
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CN
China
Prior art keywords
heat exchanger
compartment
air
frost
inside heat
Prior art date
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Active
Application number
CN201480018053.4A
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Chinese (zh)
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CN105102249A (en
Inventor
滨本浩
深渡瀬康平
大竹庆彦
小森晃
松元昂
若野胜喜
古井美绪
宫村宪浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Climate Systems Corp
Panasonic Holdings Corp
Original Assignee
Japan Climate Systems Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from JP2013071875A external-priority patent/JP6009391B2/en
Priority claimed from JP2013071887A external-priority patent/JP6004981B2/en
Application filed by Japan Climate Systems Corp, Matsushita Electric Industrial Co Ltd filed Critical Japan Climate Systems Corp
Publication of CN105102249A publication Critical patent/CN105102249A/en
Application granted granted Critical
Publication of CN105102249B publication Critical patent/CN105102249B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899—Controlling the flow of liquid in a heat pump system
    • B60H1/00921—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00961—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising means for defrosting outside heat exchangers

Abstract

Provided is a vehicle air conditioner that is switched between a plurality of operation modes in order to actuate a heat pump device (20), said operation modes including: a first dehumidifying heating operation mode in which refrigerant that is discharged from a compressor is made to flow through a downstream-side vehicle interior heat exchanger (31), a first decompression valve (52), an upstream-side vehicle interior heat exchanger (32), and a vehicle exterior heat exchanger (33), the downstream-side vehicle interior heat exchanger (31) is used as a radiator, and the upstream-side vehicle interior heat exchanger (32) is used as a heat absorber; and a second dehumidifying heating operation mode in which refrigerant that is discharged from the compressor is made to flow through the downstream-side vehicle interior heat exchanger (31), a second decompression valve (53), a vehicle exterior heat exchanger (33), and the upstream-side vehicle interior heat exchanger (32), the downstream-side vehicle interior heat exchanger (31) is used as a radiator, and the upstream-side vehicle interior heat exchanger (32) is used as a heat absorber.

Description

Air conditioner for vehicles
Technical field
The present invention relates to a kind of air conditioner for vehicles being arranged on vehicle, particularly to the vehicle including heat pump assembly Use air-conditioning device.
Background technology
So far, for as the air-conditioning device being for example arranged on hybrid vehicle, electric automobile etc., including heat The air-conditioning device of pump installation is known.For above-mentioned vehicle heat pump assembly be by refrigerant tubing by motor compressor, The external heat exchanger, air relief valve and the compartment inside heat exchanger being arranged in compartment that are arranged on outside compartment are connected in turn And (for example, referring to the patent documentation 1) that constitute.
When heat pump assembly is in heating mode of operation, cold-producing medium is allowed to flow, so that compartment inside heat exchanger plays radiator Act on and make external heat exchanger play the effect of heat extractor, and when heat pump assembly is in cooling operation pattern, allow system Cryogen flows, so that compartment inside heat exchanger plays acting on and making external heat exchanger play the effect of radiator of heat extractor.
For example, the air conditioner for vehicles in patent documentation 2 includes:It is arranged on the upper of upstream side on air-flow direction Trip side compartment inside heat exchanger；And it is arranged on the downstream compartment inside heat exchanger in the downstream on air-flow direction.? Cross valve is provided with refrigerant tubing, by switching this cross valve, heating mode of operation, cooling operation pattern etc. is operated Pattern switches over.
For example, the air conditioner for vehicles in patent documentation 3 is included as in the upstream side compartment of compartment inside heat exchanger Heat exchanger and downstream compartment inside heat exchanger, this upstream side compartment inside heat exchanger is arranged on upper on air-flow direction Trip side, this downstream compartment inside heat exchanger is arranged on the downstream on air-flow direction.Downstream compartment inside heat exchanger Play the effect of radiator under heating mode of operation and cooling operation pattern both patterns.And, compartment interior-heat in upstream side is handed over Parallel operation plays the effect of heat extractor under heating mode of operation and cooling operation pattern both patterns.
Patent documentation 1：Japanese Laid-Open Patent Publication Laid-Open 2011-5983 publication
Patent documentation 2：Japanese Laid-Open Patent Publication Laid-Open 2011-255735 publication
Patent documentation 3：Japanese Laid-Open Patent Publication Laid-Open flat 9-240266 publication
Content of the invention
- invention technical problem to be solved-
However, it is sometimes desirable to make the humidity in compartment decline the institute while being heated for air-conditioning in compartment The dehumidifying heating operation of meaning.And, environment when carrying out dehumidifying heating operation it is considered in compartment, then for example work as outdoor air When temperature is more relatively low than the such humidity of relatively low situation, low dehumidifying effect is just permissible, in addition, for example when outside air temperature is higher The such humidity of situation higher when then need higher dehumidifying effect.Dehumidifying effect is to can be utilized to be supplied to compartment inside heat exchanger The pressure of cold-producing medium and state of temperature, come adjusted, therefore, to obtain higher dehumidifying effect, are then handed over to compartment interior-heat Parallel operation supplies low-temperature refrigerant.
But, need heating capacity during due to dehumidifying heating operation, therefore in order to improve dehumidifying effect and without exception to compartment Inside heat exchanger supplies low-temperature refrigerant, just may cannot guarantee sufficient heating capacity.
Then, it is an object of the invention to：Required sufficient heating capacity during dehumidifying heating operation can either be guaranteed, and Dehumidifying effect can suitably be controlled.
And, when carrying out dehumidifying heating operation, in compartment inside heat exchanger, cause because condensed water freezes Frost.In the event of frost, then cannot carry out heat exchange in compartment inside heat exchanger it is therefore desirable to enter to exercise the fortune of frost minimizing Turn.Frost reduces operating may affect the comfortableness of passenger, therefore as described above in multiple dehumidifying heating mode of operation Between switch in the case of it is desirable to efficiently carry out under each operation mode frost reduce operating.
Then, it is an object of the invention to：Make heat pump assembly to carry out work with the dehumidifying effect requiring moisture removal corresponding In the case of work, can efficiently carry out frost and reduce operating.
- in order to solve the technical scheme of technical problem-
In order to realize described purpose, in the invention of first aspect, the cold-producing medium spraying from compressor is supplied to idle call The compartment inside heat exchanger in the flow direction downstream of air, will be from this making the heat exchanger in downstream play the effect of radiator It is supplied to the compartment inside heat exchanger of air-flow direction upstream side after the cold-producing medium decompression that the heat exchanger in downstream flows out to make The compartment inside heat exchanger of upstream side plays the effect of heat extractor.
The invention of first aspect is related to a kind of air conditioner for vehicles, including：
Heat pump assembly, in compressor that described heat pump assembly comprises compression refrigerant, the first compartment being arranged in compartment Heat exchanger, be arranged on the air stream upstream side of this first compartment inside heat exchanger in compartment the second compartment inside heat exchanger, It is arranged on external heat exchanger outside compartment, the first air relief valve and the second air relief valve, described heat pump assembly is by refrigerant pipe Road by described compressor, described first compartment inside heat exchanger, described second compartment inside heat exchanger, described first air relief valve, Described second air relief valve and described external heat exchanger connect and constitute；
Air conditioning unit in compartment, air conditioning unit storage described first compartment inside heat exchanger and described second in described compartment Compartment inside heat exchanger, and have and idle call air is sent to this first compartment inside heat exchanger and this second compartment interior-heat is handed over The pressure fan of parallel operation, air conditioning unit in described compartment is configured to：Generate described adjusted good sky after adjusted good air Gas feeds to compartment；And
Air conditioning control device, air conditioning unit in the described air conditioning control device described heat pump assembly of control and described compartment,
Described air conditioner for vehicles is characterised by：
Described air conditioning control device include first dehumidifying heating mode of operation and second dehumidifying heating mode of operation many Switch between individual operation mode to make the work of described heat pump assembly, under the described first dehumidifying heating mode of operation, make from The cold-producing medium that described compressor sprays is in described first compartment inside heat exchanger, described first air relief valve, described second compartment In heat exchanger and described external heat exchanger, described first compartment inside heat exchanger is used as radiator by circulation successively And described second compartment inside heat exchanger is used as heat extractor, under the described second dehumidifying heating mode of operation, make from described pressure Contracting machine spray cold-producing medium described first compartment inside heat exchanger, described second air relief valve, described external heat exchanger with And described first compartment inside heat exchanger is used as radiator and by institute by circulation successively in described second compartment inside heat exchanger State the second compartment inside heat exchanger and be used as heat extractor.
According to this structure, under the first dehumidifying heating mode of operation, the high-temperature high-pressure refrigerant spraying from compressor is supplied Toward the first compartment inside heat exchanger, thus the first compartment inside heat exchanger becomes radiator.On the other hand, subtracted by the first air relief valve Cold-producing medium after pressure is supplied to the second compartment inside heat exchanger, thus the second compartment inside heat exchanger becomes heat extractor.Second car Railway carriage or compartment inside heat exchanger be arranged on air conditioning unit in compartment in air-flow direction on upstream side, and heat exchange in the first compartment Device is arranged on side downstream, and therefore, the air after being dehumidified by the second compartment inside heat exchanger is by heat exchange in the first compartment It is supplied to compartment after device heating.It is achieved in the heating operation that dehumidifies.
Under the second dehumidifying heating mode of operation, equally, the first compartment inside heat exchanger becomes radiator, in the second compartment Heat exchanger becomes heat extractor, however, the cold-producing medium having passed through external heat exchanger is supplied to the second compartment inside heat exchanger, Therefore, the evaporating pressure of the second compartment inside heat exchanger is less than the evaporating pressure of external heat exchanger, therefore with the first dehumidifying Heating mode of operation is compared, and the caloric receptivity under the second dehumidifying heating mode of operation increases.Therefore, the second dehumidifying heating mode of operation Under dehumidifying effect be higher than first dehumidifying heating mode of operation under dehumidifying effect.
On the other hand, under the first dehumidifying heating mode of operation and second dehumidifying heating mode of operation both patterns, will The high-temperature high-pressure refrigerant spraying from compressor is supplied to the first compartment inside heat exchanger, by this first compartment inside heat exchanger setting Downstream on air-flow direction, therefore, it is possible to the idle call after fully heating by the second compartment inside heat exchanger dehumidifying Air is such that it is able to obtain higher heating capacity.
The invention of second aspect is such, in the invention of first aspect it is characterised in that：
Including frosting testing agency, the frosting situation of described external heat exchanger detects in described frosting testing agency,
When detecting that described external heat exchanger there occurs frosting by described frosting testing agency, described airconditioning control Device switches to defrosting dehumidifying operation mode to make described heat pump assembly work, under described defrosting dehumidifying operation mode, described Air conditioning control device make from described compressor spray cold-producing medium in described first compartment inside heat exchanger, described first air relief valve And circulate successively in described second compartment inside heat exchanger and bypass described external heat exchanger flowing.
That is, dehumidifying heating mode of operation under, for example with heating mode of operation when etc. compared with, outside air temperature will not that Low, therefore in the case of external heat exchanger frosting, by the cold-producing medium flowing to external heat exchanger is cut off, So as to reliably make the frost thawing of external heat exchanger using outdoor air.
It should be noted that will spray from compressor it is also considered that crossing in the case that external heat exchanger occurs frosting High-temperature high-pressure refrigerant be supplied to external heat exchanger come to make frost thawing method, however, so, be supplied to the first compartment The temperature drop of the cold-producing medium of inside heat exchanger, consequently, it is possible to lead to be supplied to the temperature drop of the air-conditioner wind in compartment.With respect to This, in the present invention, the high-temperature high-pressure refrigerant spraying from compressor is supplied to the first compartment inside heat exchanger, therefore, it is possible to press down The situation of the temperature drop of air-conditioner wind processed.Comfortableness thus without impact passenger.
Also, it is not necessary to using auxiliary thermal sources such as electric heaters (such as PTC heater) it becomes possible to reliably make compartment exterior-heat The frost thawing of exchanger, the little energy therefore being consumed.
The invention of the third aspect is such, in the invention of first or second aspect it is characterised in that：
Described first air relief valve is configured to change its decompression amount, and is arranged on and described second compartment inside heat exchanger Refrigerant inlet side connect pipeline on,
Described second air relief valve is configured to change its decompression amount, and is arranged on the system with described external heat exchanger On the pipeline that cryogen entrance side connects.
According to this structure, when being in the first dehumidifying heating mode of operation, can will flow into the second compartment inside heat exchanger The pressure of cold-producing medium be adjusted to middle pressure.And, when being in the second dehumidifying heating mode of operation, compartment exterior-heat can will be flowed into The pressure of the cold-producing medium of exchanger is adjusted to middle pressure.
The invention of fourth aspect is such, in the invention of the third aspect it is characterised in that：
Described first air relief valve and described second air relief valve are controlled by described air conditioning control device,
When being in the first dehumidifying heating mode of operation, described air conditioning control device utilizes the decompression of described first air relief valve Amount, to adjust the operating pressure of described second compartment inside heat exchanger, on the other hand, is being in the second dehumidifying heating mode of operation When, described air conditioning control device adjusts the work pressure of described external heat exchanger using the decompression amount of described second air relief valve Power.
According to this structure, can be by the work of the second compartment inside heat exchanger when being in the first dehumidifying heating mode of operation Pressure is adjusted to middle pressure, can adjust the operating pressure of external heat exchanger when being in the second dehumidifying heating mode of operation For middle pressure.
The invention of the 5th aspect is such, in the invention of fourth aspect it is characterised in that：
Including temperature testing organization, described temperature testing organization detects under the air stream of described second compartment inside heat exchanger The temperature of trip side,
Described air conditioning control device is based on the described second compartment inside heat exchanger being detected by described temperature testing organization Air stream downstream temperature, to control described first air relief valve and described second air relief valve.
According to this structure, if the temperature in the air stream downstream of the second compartment inside heat exchanger is relatively low, by the second car The moisture removal of railway carriage or compartment inside heat exchanger dehumidifying increases, and can control the first air relief valve and the second decompression exactly according to this moisture removal Valve, the operating pressure of the second compartment inside heat exchanger and external heat exchanger is adjusted to middle pressure.
The invention of the 6th aspect is such, in any one of the invention invention of the first to the 5th aspect, its feature It is：
The air conditioning unit multiple blowing patterns having including defrosting blowing pattern in described compartment, in described defrosting blowing mould Air-conditioner wind is supplied to the glass for vehicle window in compartment under formula,
Described air conditioner for vehicles includes mode detection mechanism of drying, and described car detects in described blowing mode detection mechanism In railway carriage or compartment air conditioning unit whether be in defrosting blowing pattern,
By described blowing mode detection mechanism detect in described compartment air conditioning unit be in defrosting blowing pattern feelings Under condition, described air conditioning control device makes described heat pump assembly work under the second dehumidifying heating mode of operation.
According to this structure, it is desirable to remove the possibility of the mist on glass for vehicle window in the case of have selected defrosting blowing pattern Property higher, thus in this case, by switching to the second dehumidifying heating mode of operation that can obtain higher dehumidifying effect, The mist on glass for vehicle window can be removed early.
In order to realize described purpose, in the invention of the 7th aspect, having accomplished can be by being controlled to air relief valve Efficiently reduce frost.
The invention of the 7th aspect is related to a kind of air conditioner for vehicles, including：
Heat pump assembly, in compressor that described heat pump assembly comprises compression refrigerant, the first compartment being arranged in compartment Heat exchanger, be arranged on the air stream upstream side of this first compartment inside heat exchanger in compartment the second compartment inside heat exchanger, The external heat exchanger being arranged on outside compartment and can change the first air relief valve of decompression amount, described heat pump assembly is by freezing Agent pipeline by described compressor, described first compartment inside heat exchanger, described second compartment inside heat exchanger, described first decompression Valve and described external heat exchanger connect and constitute；
Air conditioning unit in compartment, air conditioning unit storage described first compartment inside heat exchanger and described second in described compartment Compartment inside heat exchanger, and have and idle call air is sent to this first compartment inside heat exchanger and this second compartment interior-heat is handed over The pressure fan of parallel operation, air conditioning unit in described compartment is configured to：Generate described adjusted good sky after adjusted good air Gas feeds to compartment；And
Air conditioning control device, air conditioning unit in the described air conditioning control device described heat pump assembly of control and described compartment,
Described air conditioner for vehicles is characterised by：
Described first air relief valve is arranged on the pipeline of refrigerant inlet side of described second compartment inside heat exchanger,
Described first air relief valve is controlled by described air conditioning control device,
Described air conditioning control device reduces the many of operation mode in inclusion first dehumidifying heating mode of operation and the first frost Switch between individual operation mode to make the work of described heat pump assembly, described air conditioning control device is by described first air relief valve control Make：Compared with when being in the first dehumidifying heating mode of operation, flow into described the being in when the first frost reduces operation mode The refrigerant temperature of two compartment inside heat exchanger rises；Wherein, by described first under the described first dehumidifying heating mode of operation Compartment inside heat exchanger is used as radiator, described second compartment inside heat exchanger is used as heat extractor, reduces fortune in the first frost The frost being in the described second compartment inside heat exchanger of described first dehumidifying heating mode of operation is made to reduce under rotary-die type.
According to this structure, when being in the first dehumidifying heating mode of operation, by the control to the first air relief valve, can make The refrigerant temperature flowing into the second compartment inside heat exchanger rises, therefore when being in the first frost minimizing operation mode, can Efficiently reduce the frost of the second compartment inside heat exchanger.
The invention of eighth aspect is related to a kind of air conditioner for vehicles, including：
Heat pump assembly, in compressor that described heat pump assembly comprises compression refrigerant, the first compartment being arranged in compartment Heat exchanger, be arranged on the air stream upstream side of this first compartment inside heat exchanger in compartment the second compartment inside heat exchanger, The external heat exchanger being arranged on outside compartment and can change the second air relief valve of decompression amount, described heat pump assembly is by freezing Agent pipeline by described compressor, described first compartment inside heat exchanger, described second compartment inside heat exchanger, described second decompression Valve and described external heat exchanger connect and constitute；
Air conditioning unit in compartment, air conditioning unit storage described first compartment inside heat exchanger and described second in described compartment Compartment inside heat exchanger, and have and idle call air is sent to this first compartment inside heat exchanger and this second compartment interior-heat is handed over The pressure fan of parallel operation, air conditioning unit in described compartment is configured to：Generate described adjusted good sky after adjusted good air Gas feeds to compartment；And
Air conditioning control device, air conditioning unit in the described air conditioning control device described heat pump assembly of control and described compartment,
Described air conditioner for vehicles is characterised by：
Described second air relief valve is arranged on the pipeline of refrigerant inlet side of described external heat exchanger,
Described second air relief valve is controlled by described air conditioning control device,
Described air conditioning control device reduces the many of operation mode in inclusion second dehumidifying heating mode of operation and the second frost Switch between individual operation mode to make the work of described heat pump assembly, described air conditioning control device is by described second air relief valve control Make：Compared with when being in the second dehumidifying heating mode of operation, make described in inflow being in when the second frost reduces operation mode The refrigerant temperature of external heat exchanger declines to absorb heat at this external heat exchanger, wherein, in the described second dehumidifying Under heating mode of operation, described first compartment inside heat exchanger is used as radiator, by described second compartment inside heat exchanger Heat extractor and make this second compartment inside heat exchanger caloric receptivity more than first dehumidifying heating mode of operation under this second car The caloric receptivity of railway carriage or compartment inside heat exchanger, reducing in described second frost makes to be in the second dehumidifying heating mode of operation under operation mode The frost of described second compartment inside heat exchanger reduces.
According to this structure, when being in the second dehumidifying heating mode of operation, by the control to the second air relief valve, Neng Gou Absorb heat at external heat exchanger, therefore when being in the second frost minimizing operation mode, can efficiently reduce by the second compartment The frost of inside heat exchanger.
The invention of the 9th aspect is such, in the invention of the 7th aspect it is characterised in that：
The operation mode of described air conditioning control device includes the second dehumidifying heating mode of operation and the second frost reduces operating Pattern, the second air relief valve is controlled into by described air conditioning control device：Compared with when being in the second dehumidifying heating mode of operation, at place When the second frost reduces operation mode, the refrigerant temperature of the described external heat exchanger of inflow is made to decline to come outside this compartment Absorb heat at heat exchanger, wherein, under the described second dehumidifying heating mode of operation, described first compartment inside heat exchanger is used as Radiator, by described second compartment inside heat exchanger be used as heat extractor and make this second compartment inside heat exchanger caloric receptivity many The caloric receptivity of this second compartment inside heat exchanger under the first dehumidifying heating mode of operation, reduces operating in described second frost The frost being in the described second compartment inside heat exchanger of the second dehumidifying heating mode of operation is made to reduce under pattern.
According to this structure, the caloric receptivity of the second compartment inside heat exchanger under the second dehumidifying heating mode of operation is more than the The caloric receptivity of the second compartment inside heat exchanger under one dehumidifying heating mode of operation, the therefore second dehumidifying heating mode of operation is relatively Strong dehumidifying heating operation.Thereby, it is possible to make heat pump assembly to carry out work with the dehumidifying effect requiring moisture removal corresponding.
And, when being in the second dehumidifying heating mode of operation, reducing operation mode by the second frost makes the second car The frost of railway carriage or compartment inside heat exchanger reduces.Thus, carry out being respectively adapted to the first dehumidifying heating mode of operation and the second dehumidifying heats The frost of operation mode reduces operating such that it is able to efficiently reduce frost.
The invention of the tenth aspect is such, in any one of the invention invention of the 7th to the 9th aspect, its feature It is：
Described air conditioning control device also switches to the 3rd frost to be reduced operation mode to make described heat pump assembly work, its In, make cold-producing medium bypass described second compartment inside heat exchanger under described 3rd frost minimizing operation mode and flow.
According to this structure, when being in the 3rd frost minimizing operation mode, cold-producing medium is without flow through heat exchange in the second compartment Device, to make the second compartment inside heat exchanger hence with by the idle call air that pressure fan is sent in the second compartment inside heat exchanger Frost reduce.
And, frost can be made lentamente to reduce by cold-producing medium will not be made to flow through the second compartment inside heat exchanger, because Humidity in this compartment will not hastily rise such that it is able to keep comfortableness.
The invention of the 11st aspect is such, in the invention of the tenth aspect it is characterised in that：
Described air conditioner for vehicles includes frost decision mechanism, and described frost decision mechanism judges whether to need to described Second compartment inside heat exchanger carries out frost and reduces operating,
When judging to need described second compartment inside heat exchanger carried out with frost to reduce fortune by described frost decision mechanism In the case of turning, described heat pump assembly is switched to the 3rd frost to reduce operating by described air conditioning control device, so that described heat Pump installation carries out the 3rd frost at the appointed time and reduces operating, then, when continuing to be judged as to need by described frost decision mechanism In the case that described second compartment inside heat exchanger is carried out with frost minimizing operating, if being switched to the 3rd frost to reduce fortune When the tightly previous operation mode of rotary-die type is the first dehumidifying heating mode of operation, described heat pump is filled by described air conditioning control device Put switch to first frost reduce operation mode, on the other hand, if be switched to the 3rd frost reduce operation mode tight before When one operation mode is the second dehumidifying heating mode of operation, described heat pump assembly is switched to second by described air conditioning control device Frost reduces operation mode.
According to this structure, in the case of needing the second compartment inside heat exchanger is carried out with frost minimizing operating, first, lead to Cross and switch to the 3rd frost making cold-producing medium bypass the second compartment inside heat exchanger flowing to reduce operation mode such that it is able to make frost Freeze and lentamente reduce, therefore the humidity in compartment will not hastily rise, thus, it is possible to keep comfortableness.
Then, if also needing to the second compartment inside heat exchanger is carried out with frost minimizing operating, remove according to tightly previous To switch to, the first frost reduces operation mode to wet heating mode of operation, the second frost reduces operation mode, thus proceeding Significantly more efficient frost reduces operating.Thus, the frost making the second compartment inside heat exchanger reduces.
- The effect of invention-
According to the invention of first aspect, the first dehumidifying heating mode of operation and the second dehumidifying heating operation mould can included Switch over to operate between multiple operation modes of formula, wherein, under the described first dehumidifying heating mode of operation, make from compression The cold-producing medium that machine sprays is successively in the first compartment inside heat exchanger, the first air relief valve, the second compartment inside heat exchanger and compartment Circulate in outer heat-exchanger, the first compartment inside heat exchanger is used as radiator and by the second compartment inside heat exchanger Heat extractor, described second dehumidifying heating mode of operation under, make from compressor spray cold-producing medium successively in the first compartment interior-heat Circulate in exchanger, the second air relief valve, external heat exchanger and the second compartment inside heat exchanger, by the first compartment interior-heat Exchanger is used as radiator and the second compartment inside heat exchanger is used as heat extractor.Thus, can either fill during the heating operation that dehumidifies Divide ground to guarantee heating capacity, can suitably control dehumidifying effect again.
According to the invention of second aspect, in the case that external heat exchanger occurs frosting, make from compressor ejection Cold-producing medium bypasses external heat exchanger flowing, and the frost therefore, it is possible to make external heat exchanger efficiently melts.
According to the invention of the third aspect, the cold-producing medium due to the first air relief valve being arranged on the second compartment inside heat exchanger enters On the pipeline of mouth side, the second air relief valve is arranged on the pipeline of refrigerant inlet side of external heat exchanger, therefore, at place Cold-producing medium in second compartment inside heat exchanger can be set to middle pressure when the first dehumidifying heating mode of operation, and, at place Cold-producing medium in external heat exchanger can be set to middle pressure when the second dehumidifying heating mode of operation.Thereby, it is possible to careful Ground adjustment dehumidifying effect.
According to the invention of fourth aspect, by adjusting the decompression amount of the first air relief valve, the second air relief valve, second can be adjusted Compartment inside heat exchanger and the operating pressure of external heat exchanger, therefore, it is possible to meticulously adjust dehumidifying effect.
According to the invention of the 5th aspect, the temperature being capable of air stream downstream based on the second compartment inside heat exchanger is controlled Make the first air relief valve and the second air relief valve, therefore, it is possible to adjust dehumidifying effect exactly according to current moisture removal.
According to the invention of the 6th aspect, when in compartment air conditioning unit be in defrosting blowing pattern in the case of, so that heat pump is filled Put and work under the second dehumidifying heating mode of operation, therefore, it is possible to remove the mist on glass for vehicle window early.
According to the invention of the 7th aspect, when being in the first dehumidifying heating mode of operation, can be by the first air relief valve Control making the refrigerant temperature of inflow the second compartment inside heat exchanger rise, therefore reduce operational mode being in the first frost The frost of the second compartment inside heat exchanger can efficiently be reduced during formula.
According to the invention of eighth aspect, when being in the second dehumidifying heating mode of operation, can be by the second air relief valve It is controlled heat absorption at external heat exchanger, be therefore in when the second frost reduces operation mode and can efficiently subtract The frost of few second compartment inside heat exchanger.
According to the invention of the 9th aspect, set the first dehumidifying heating mode of operation and second that dehumidifying effect differs and remove Wet heating mode of operation, carries out the first frost under the first dehumidifying heating mode of operation and reduces operating, heat fortune in the second dehumidifying Carry out under rotary-die type different from first frost reduce operating second frost reduce operating, therefore, when make heat pump assembly with will In the case that the dehumidifying effect asking moisture removal corresponding carrys out work, can efficiently carry out frost and reduce operating.
According to the invention of the tenth aspect, by being set as the make cold-producing medium bypass the second compartment inside heat exchanger flowing the 3rd Frost reduces operation mode, thus comfortableness can either be kept in the case of the humidity in compartment will not be made hastily to increase, The frost of the second compartment inside heat exchanger can be reduced again.
According to the invention of the 11st aspect, when needing that the second compartment inside heat exchanger is carried out with the situation that frost reduces operating Under, it is set as that the 3rd frost making cold-producing medium bypass the second compartment inside heat exchanger flowing reduces operation mode, thus can either Keep comfortableness in the case of the humidity in compartment will not be made hastily to increase, can reduce by the second compartment inside heat exchanger again Frost, if also needing to carry out frost afterwards to reduce operating, can continue to carry out and tightly previous dehumidifying heating operation mould The corresponding significantly more efficient frost of formula reduces operating, therefore, it is possible to reliably reduce the frost of the second compartment inside heat exchanger.
Brief description
Fig. 1 is the structure sketch map of the air conditioner for vehicles involved by embodiment.
Fig. 2 is the block diagram of air conditioner for vehicles.
Fig. 3 is the axonometric chart of the upstream side compartment inside heat exchanger seen from air-flow direction upstream side.
Fig. 4 is in the figure being equivalent to Fig. 1 during cooling operation pattern.
Fig. 5 is in the figure being equivalent to Fig. 1 when dehumidifying operation mode that defrosts.
Fig. 6 is in the figure being equivalent to Fig. 1 during weak dehumidifying heating mode of operation.
Fig. 7 is in the first frost and reduces the figure being equivalent to Fig. 1 during operation mode.
Fig. 8 is in the first frost and reduces mollier diagram during operation mode.
Fig. 9 be in dehumidifying by force heating mode of operation when the figure being equivalent to Fig. 1.
Figure 10 is in the second frost and reduces the figure being equivalent to Fig. 1 during operation mode.
Figure 11 is in the second frost and reduces mollier diagram during operation mode.
Figure 12 is in weak frost and reduces the figure being equivalent to Fig. 1 during operation mode.
Figure 13 is in the figure being equivalent to Fig. 1 during heating mode of operation.
Figure 14 is the flow chart of the rate-determining steps representing that air conditioning control device is carried out.
Figure 15 is the flow chart representing rate-determining steps when carrying out defrosting operating.
Figure 16 is to represent by carrying out push-botton operation come control when dehumidifying heating mode of operation is switched over by passenger The flow chart of step.
Figure 17 is to represent according to the humidity in compartment come rate-determining steps when dehumidifying heating mode of operation is switched over Flow chart.
Figure 18 is to represent according to outside air temperature come the flow chart of rate-determining steps when frost operating is switched over.
Figure 19 is the flow chart representing other rate-determining steps when frost operating is switched over.
Specific embodiment
Below, based on accompanying drawing, embodiments of the present invention are described in detail.Following preferred implementation is only It is substantially preferred example, the purposes of the present invention, the application of the present invention or the present invention is not any limitation as Intention.
Fig. 1 is the structure sketch map of the air conditioner for vehicles 1 involved by embodiments of the present invention.It is mounted with that vehicle is empty The vehicle adjusting device 1 is the electric automobile with traveling accumulator and electric drive motor.
Air conditioner for vehicles 1 includes：Air conditioning unit 21 and control heat pump assembly 20 and car in heat pump assembly 20, compartment Air conditioning unit 21 air conditioning control device 22 (figure 2 illustrates) in railway carriage or compartment.
Heat pump assembly 20 includes：The motor compressor 30 of compression refrigerant, the downstream compartment interior-heat being arranged in compartment Exchanger (the first compartment inside heat exchanger) 31, it is arranged on the air-flow direction of downstream compartment inside heat exchanger 31 in compartment The upstream side compartment inside heat exchanger (the second compartment inside heat exchanger) 32 of upstream side, it is arranged on heat exchange outside the compartment outside compartment Device 33, gas-liquid separator (accumulator) 34, the first～the 4th main refrigerant pipeline 40 that the said equipment 30～34 is connected ～43 and the first～the 3rd branched-refrigerant pipeline 44～46.
Motor compressor 30 is the well-known so far motor compressor being installed on vehicle, is carried out by motor Drive.The spray volume of the time per unit of motor compressor 30 can be made to become by changing the rotating speed of motor compressor 30 Change.Motor compressor 30 is connected with air conditioning control device 22, by this start and stop to this motor compressor 30 for the air conditioning control device 22 (ON and OFF) switching and rotating speed are controlled.Powered from traveling accumulator to motor compressor 30.
As shown in figure 3, upstream side compartment inside heat exchanger 32 includes upside header tank (header tank) 47, downside header tank 48 and core body (core) 49.Core body 49 is to make vertically extending pipe 49a and fin 49b along a left and right directions (left side of Fig. 3 Right direction) the alternately arranged and part that forms as one, idle call air passes through between pipe 49a.Represent empty with white arrow Call the flow direction of air.Pipe 49a lines up two row along the flow direction of extraneous air.
The pipe 49a of air stream upstream side be connected with upside header tank 47 with the upper end of the pipe 49a in downstream and with this on the upside of Header tank 47 connects.In the inside of upside header tank 47, it is provided with and the inner space of header tank on the upside of this 47 is divided into air-flow direction Upstream side space and downstream space the first lattice 47a.More lean on air-flow direction upstream side than the first lattice 47a Space connect with the upper end of the pipe 49a of upstream side, than the first lattice 47a more lean on air-flow direction downstream space with The upper end connection of the pipe 49a in downstream.
And, in the inside of upside header tank 47, it is provided with and the inner space of header tank on the upside of this 47 is separated in left-right direction The second lattice 47b.Ratio the second lattice 47b on the first lattice 47a more on the right side be formed in part with intercommunicating pore 47e.
It is formed with the inflow entrance 47c of cold-producing medium in the air stream downstream of the left surface of upside header tank 47, and in upstream Side is formed with the flow export 47d of cold-producing medium.
Identical with the first lattice 47a of upside header tank 47, being internally provided with its inner space in downside header tank 48 It is separated into the upstream side space of air-flow direction and the lattice 48a in downstream space.More lean on air flow than lattice 48a The space of direction upstream side is connected with the lower end of the pipe 49a of upstream side, more leans on air-flow direction downstream than lattice 48a Space is connected with the lower end of the pipe 49a in downstream.
According to said structure, this upstream side compartment inside heat exchanger 32 has four paths altogether.That is, from inflow entrance 47c The cold-producing medium flowing into flows into first and more leans on air-flow direction downstream than the first lattice 47a in the header tank 47 of upside and compare second Lattice 47b more keeps left the space R1 of side, then flows downward in the pipe 49a connecting with space R1.
Then, flow into downside header tank 48 in than lattice 48a more lean on air-flow direction downstream space S 1 after to the right Flowing and flow up in pipe 49a in side, then flows in the header tank 47 of upside and more lean on air-flow direction than the first lattice 47a Downstream and ratio the second lattice 47b space R2 more on the right side.
Then, the cold-producing medium in the R2 of space passes through the intercommunicating pore 47e on the first lattice 47a, flows in the header tank 47 of upside More depend on air-flow direction upstream side and ratio the second lattice 47b space R3 more on the right side, Ran Hou than the first lattice 47a Flow downward in the pipe 49a connecting with space R3.
Subsequently, flow into downside header tank 48 in than lattice 48a more lean on air-flow direction upstream side space S 2 after towards a left side Flowing and flow up in pipe 49a in side, then flows in the header tank 47 of upside and more lean on air-flow direction than the first lattice 47a Upstream side and than the second lattice 47b more keep left side space R4 after, then flow to outside from flow export 47d.
Wind upper path P1 is constituted by the path of the air-flow direction upstream side of upstream side compartment inside heat exchanger 32, and And, path P 2 on the downside of wind are constituted by the path in air-flow direction downstream.
Downstream compartment inside heat exchanger 31 is only that size is less than described upstream side compartment inside heat exchanger 32, and structure is then Identical with upstream side compartment inside heat exchanger 32, therefore omit the detailed description to downstream compartment inside heat exchanger 31.Need Illustrate, downstream compartment inside heat exchanger 31 can have the structures different from upstream side compartment inside heat exchanger 32.
External heat exchanger 33 (is equivalent in motor-powered vehicle positioned at the motor room being arranged on front part of vehicle Engine room) in this motor room front end near, and contact with traveling wind.Although not shown, however external heat exchanger 33 also include upside header tank, downside header tank and core body.Core body has vertically extending pipe.
As shown in figure 1, cooling fan 37 is provided with vehicle.This cooling fan 37 is driven by fan motor 38, and It is configured to send air towards external heat exchanger 33.Fan motor 38 is connected with air conditioning control device 22, by this air-conditioning control Device 22 processed is controlled to the start and stop switching of this fan motor 38 and rotating speed.Traveling accumulator is also to fan motor 38 Power supply.Additionally, cooling fan 37 can also send air towards to cool down the radiating of such as traveling converter (inverter) etc. Device, and when requiring to carry out air adjustment beyond other in the case of cooling fan 37 also can be allowed to work.
Gas-liquid separator 34 is arranged on the suction inlet of the motor compressor 30 in the middle part of the 4th main refrigerant pipeline 43 Near.
On the other hand, the first main refrigerant pipeline 40 is by heat exchange in the ejiction opening of motor compressor 30 and downstream compartment The refrigerant inflow port of device 31 connects.And, the second main refrigerant pipeline 41 is by the refrigeration of downstream compartment inside heat exchanger 31 Agent flow export is connected with the refrigerant inflow port of external heat exchanger 33.3rd main refrigerant pipeline 42 is by heat exchange outside compartment The refrigerant outflow port of device 33 is connected with the refrigerant inflow port of upstream side compartment inside heat exchanger 32.4th main refrigerant pipeline The refrigerant outflow port of upstream side compartment inside heat exchanger 32 is connected by 43 with the suction inlet of motor compressor 30.
And, the first branched-refrigerant pipeline 44 is branched off from the second main refrigerant pipeline 41, and with the 3rd main refrigeration Agent pipeline 42 connects.Second branched-refrigerant pipeline 45 is branched off from the second main refrigerant pipeline 41, and with the 4th main refrigeration Agent pipeline 43 connects.3rd branched-refrigerant pipeline 46 is branched off from the 3rd main refrigerant pipeline 42, and with the 4th main refrigeration Agent pipeline 43 connects.
And, heat pump assembly 20 includes high-pressure side flow channel switching valve 50, low-pressure side flow channel switching valve 51, the first air relief valve 52nd, the second air relief valve 53, first check-valve 54 and second check-valve 55.
High-pressure side flow channel switching valve 50 and low-pressure side flow channel switching valve 51 are made up of electric T-shaped valve, and are filled by airconditioning control Put 22 controls.High-pressure side flow channel switching valve 50 is arranged on the middle part of the second main refrigerant pipeline 41, and freezes with the first branch Agent pipeline 44 connects.Low-pressure side flow channel switching valve 51 is arranged on the middle part of the 4th main refrigerant pipeline 43, and with the 3rd branch Refrigerant tubing 46 connects.
First air relief valve 52 and the second air relief valve 53 are electronic air relief valve, and the first air relief valve 52 and the second air relief valve 53 can In constriction stream so that the swelling state that expands of cold-producing medium and will be open for stream so that cold-producing medium do not flow with not expanding unexpansive Switch between state.By air conditioning control device 22, first air relief valve 52 and the second air relief valve 53 are controlled.Expanding The aperture of air relief valve under state, is generally set according to the state of air conditioner load.First air relief valve 52 and the second air relief valve 53 Aperture can also set in the following manner, that is,：Regardless of air conditioner load, when being in dehumidifying heating operation described later, energy Upstream side compartment inside heat exchanger 32, the operating pressure of external heat exchanger 33 is enough made to become middle pressure.
First air relief valve 52 is arranged on ratio the 3rd main refrigerant pipeline 42 and first point on the 3rd main refrigerant pipeline 42 The connecting portion of refrigerant tubing 44 closer at the position of upstream side compartment inside heat exchanger 32, i.e. upstream side compartment interior-heat On the refrigerant tubing of refrigerant inlet side of exchanger 32.On the other hand, the second air relief valve 53 is arranged on the second main refrigerant On pipeline 41 than high-pressure side flow channel switching valve 50 closer at the position of external heat exchanger 33, i.e. external heat exchanger On 33 refrigerant tubing of refrigerant inlet side.
First check-valve 54 is arranged on the 3rd main refrigerant pipeline 42, and is configured to：Allow cold-producing medium main the 3rd Flow towards upstream side compartment inside heat exchanger 32 side from external heat exchanger 33 side in refrigerant tubing 42, and stop refrigeration Agent is flowed in the opposite direction.
Second check-valve 55 is arranged on the second branched-refrigerant pipeline 45, and is configured to：Allow cold-producing medium second Flow towards the second main refrigerant pipeline 41 side from the 4th main refrigerant pipeline 43 side in branched-refrigerant pipeline 45, and stop system Cryogen flows in the opposite direction.
And, in compartment, air conditioning unit 21 include：Storage downstream compartment inside heat exchanger 31 and upstream side compartment interior-heat The casing 60 of exchanger 32, mixed air door (temperature adjustment door) 62, the mixed air door actuating mechanism 63 driving mixed air door 62, blowing pattern Switching door 64 and pressure fan 65.It should be noted that the air heaters such as PTC heater can also be arranged in casing 60.
Pressure fan 65 is in order to select after the side in air (outdoor air) outside air in a car compartment (room air) and compartment Selected air is sent in casing 60 as idle call air.Pressure fan 65 includes Sirocco fan 65a and drives Xi Luoke The air-supply motor 65b of fan 65a rotation.Air-supply motor 65b is connected with air conditioning control device 22, by this airconditioning control Device 22 is controlled to the start and stop switching of this air-supply motor 65b and rotating speed.Traveling accumulator is also to air-supply with electronic Machine 65b powers.
Pressure fan 65 is formed with introduce the room air intake 65c of room air and in order to introduce outdoor sky The outdoor air intake 65d of gas.In being internally provided with of pressure fan 65, room air intake 65c and outdoor air are introduced The indoor and outdoor air switching door 65e that one of mouth 65d opens and closes another.And, pressure fan 65 is provided with Indoor and outdoor air is driven to switch the indoor and outdoor air switching door actuator 61 of door 65e.This indoor and outdoor air switching door execution machine Structure 61 is controlled by air conditioning control device 22.Switching air-supply between pattern and outdoor air introducing pattern can be introduced by air indoors The air of machine 65 introduces pattern, and wherein, described room air introduces pattern and refers to room air intake 65c standard-sized sheet and by room The fully closed pattern of outer air introducing port 65d, described outdoor air introduces pattern and refers to fully closed for room air intake 65c and general The pattern of outdoor air intake 65d standard-sized sheet.The switching that room air introduces between pattern and outdoor air introducing pattern is can Completed by the switching manipulation being carried out by passenger, but when under rated condition described later, even if selecting room air to draw Enter pattern, air conditioning control device 22 also can automatically switch to outdoor air and introduce pattern.
Casing 60 is arranged on the inside of instrument board in compartment (not shown).Casing 60 is formed with defrosting blow-off port 60a, Air feed blow-off outlet 60b and heating blow-off outlet 60c.Defrosting blow-off port 60a in order to feed to the front window inner surface in compartment by air-conditioner wind.For Wind outlet 60b mainly in order to feed to the upper part of the body of passenger in compartment by air-conditioner wind.Blow-off outlet 60c is in order to supply air-conditioner wind for heating The foot of passenger into compartment.
Blowing pattern switching door 64 makes above-mentioned blow-off outlet 60a～60c open and close respectively.Blowing pattern switching door 64 exists Work under the driving of the actuator being connected with air conditioning control device 22, but this and not shown.
As blowing pattern, for example, include：Air-conditioner wind is made to flow to the defrosting blowing pattern of defrosting blow-off port 60a, make air-conditioning Distinguished and admirable air feed to air feed blow-off outlet 60b dry pattern, so that air-conditioner wind is flowed to the heating blowing pattern of heating blow-off outlet 60c, make Air-conditioner wind flows to the defrosting/heating mode of defrosting blow-off port 60a and heating blow-off outlet 60c, makes air-conditioner wind flow to air feed blow-off outlet Dibit (bi-level) pattern of 60b and heating blow-off outlet 60c etc..
The idle call air being introduced in casing 60 will be all by upstream side compartment inside heat exchanger 32.
Mixed air door 62 is accommodated in upstream side compartment inside heat exchanger 32 and downstream compartment inside heat exchanger 31 in casing 60 Between.Mixed air door 62 will be in order to will pass through downstream compartment interior-heat to the in the air passing through upstream side compartment inside heat exchanger 32 The air capacity of exchanger 31 is changed, thus under determining to pass through the air of upstream side compartment inside heat exchanger 32 and pass through The mixed proportion of the air of trip side compartment inside heat exchanger 31 is adjusted with the temperature to air-conditioner wind.
Air conditioner for vehicles 1 includes：Outside air temperature sensor 70, external heat exchanger temperature sensor 71, Compartment inside heat exchanger temperature sensor (temperature testing organization) 73, room air temperature sensor 75, humidity sensor 76.This A little sensors are connected with air conditioning control device 22.
Outside air temperature sensor 70 is arranged on and more leans on air-flow direction upstream side than external heat exchanger 33 On position, in order to detect the temperature (outside air temperature TG) flowing into the extraneous air before external heat exchanger 33.Another Aspect, external heat exchanger temperature sensor 71 is arranged on the face in the air-flow direction downstream of external heat exchanger 33 On, in order to detect the surface temperature of external heat exchanger 33.
Compartment inside heat exchanger temperature sensor 73 is arranged on the air-flow direction of upstream side compartment inside heat exchanger 32 Downstream, in order to detect the surface temperature of upstream side compartment inside heat exchanger 32.Based on by compartment inside heat exchanger temperature sensing The temperature in the air-flow direction downstream of upstream side compartment inside heat exchanger 32 of device 73 detection, can detect upstream side compartment Whether inside heat exchanger 32 there is frost.
In order to detect the temperature in compartment (indoor air temperature TR), it is arranged on compartment to room air temperature sensor 75 Interior predetermined portion.In order to detect the humidity in compartment (humidity RH in compartment), it is arranged in compartment humidity sensor 76 Predetermined portion.Room air temperature sensor 75 and humidity sensor 76 are well-known so far sensor, therefore save Detailed description slightly to described sensor.
And, air conditioner for vehicles 1 includes the operation button 80 (illustrating in Fig. 2) being arranged in compartment, and this operation is pressed Button 80 is connected with air conditioning control device 22.As operation button 80, including the button of change blowing pattern, change design temperature Button, change button etc. of air quantity, in this vehicle, also include in order to by blowing pattern be set to defrost blowing pattern DEF by Button.And, sensor of detection insolation amount etc. is additionally provided with air conditioner for vehicles 1, here is not shown out.
Air conditioning control device 22 is according to temperature, compartment in the design temperature of such as occupant set, outside air temperature, compartment Controlling heat pump assembly 20 etc., it is by known central processing unit, ROM, RAM for multiple information such as interior humidity, insolation amount Deng composition.And, air conditioning control device 22 to control motor compressor 30, fan motor 38 always according to air conditioner load.
Identical with general automatic air condition control, in mastery routine described later, air conditioning control device 22 is to heat pump assembly 20 The switching of operation mode, the air quantity of pressure fan 65, the aperture of mixed air door 62, the switching of blowing pattern, air introduce pattern Switching, motor compressor 30 and air-supply motor 65b are controlled, and for example, fan motor 38 is substantially in electronic pressure Be operated during contracting machine 30 work, even if but motor compressor 30 is in halted state, also can need to row Sail and in the case of being cooled down with converter etc., allow fan motor 38 work.
The operation mode of heat pump assembly 20 has：Cooling operation pattern, defrosting dehumidifying operation mode, weak dehumidifying heating operation mould Formula (the first dehumidifying heating mode of operation), the first frost reduce operation mode, (second dehumidifies heats the heating mode of operation that dehumidifies by force Operation mode), the second frost reduces operation mode, weak frost reduces operation mode (the 3rd frost reduce pattern), heating operation Pattern.
Cooling operation pattern shown in Fig. 4 is such as selected operating in the case that outside air temperature is higher than 25 DEG C Pattern.Under cooling operation pattern, make downstream compartment inside heat exchanger 31 play the effect of radiator, make upstream side compartment interior-heat Exchanger 32 plays the effect of heat extractor, makes external heat exchanger 33 play the effect of radiator.
That is, high-pressure side flow channel switching valve 50 flow path switches over, so that flowing out from downstream compartment inside heat exchanger 31 Refrigerant flow direction the second air relief valve 53 side and do not flow into the inflow entrance of upstream side compartment inside heat exchanger 32.And, low-pressure side Flow channel switching valve 51 flow path switches over, so that the cold-producing medium flowing out from upstream side compartment inside heat exchanger 32 flows into gas-liquid dividing From device 34.Make the first air relief valve 52 be in swelling state, make the second air relief valve 53 be in non-expansion state.
If making motor compressor 30 work in this condition, the high-pressure refrigerant spraying from motor compressor 30 flows through Flow into downstream compartment inside heat exchanger 31 after first main refrigerant pipeline 40, follow in downstream compartment inside heat exchanger 31 Ring.In downstream compartment inside heat exchanger 31, the cold-producing medium stream of circulation does not produce swollen through the second main refrigerant pipeline 41 Flow into external heat exchanger 33 swollenly.The 3rd main refrigerant is flowed through after the cold-producing medium heat release having been flowed into external heat exchanger 33 Pipeline 42 is simultaneously expanded by the first air relief valve 52, then flows into upstream side compartment inside heat exchanger 32.Have been flowed into upstream side car The cold-producing medium of railway carriage or compartment inside heat exchanger 32 circulates in upstream side compartment inside heat exchanger 32 and absorbs heat from idle call in the air.Exist The cold-producing medium stream circulating in upstream side compartment inside heat exchanger 32 is after the 4th main refrigerant pipeline 43 through by gas-liquid separator 34 It is sucked in motor compressor 30.
Under cooling operation pattern, set the aperture of mixed air door 62, so that having passed through upstream side compartment inside heat exchanger 32 Idle call air hardly flow into downstream compartment inside heat exchanger 31.
Heating mode of operation shown in Figure 13 e.g. works as the situation (outside air temperature that outside air temperature is less than 0 DEG C When extremely low) under select operation mode.Under heating mode of operation, make downstream compartment inside heat exchanger 31 and upstream side compartment Inside heat exchanger 32 plays the effect of radiator, makes external heat exchanger 33 play the effect of heat extractor.
That is, high-pressure side flow channel switching valve 50 flow path switches over, so that flowing out from downstream compartment inside heat exchanger 31 Cold-producing medium flow into the inflow entrance of upstream side compartment inside heat exchanger 32.And, low-pressure side flow channel switching valve 51 flow path is carried out Switching, so that the cold-producing medium flowing out from external heat exchanger 33 flows into gas-liquid separator 34.The first air relief valve 52 is made to be in non- Swelling state, makes the second air relief valve 53 be in swelling state.
If making motor compressor 30 work in this condition, the high-pressure refrigerant spraying from motor compressor 30 flows through Flow into downstream compartment inside heat exchanger 31 after first main refrigerant pipeline 40, follow in downstream compartment inside heat exchanger 31 Ring.In downstream compartment inside heat exchanger 31, the cold-producing medium of circulation flows through first branch's system from the second main refrigerant pipeline 41 Flow into upstream side compartment inside heat exchanger 32 after cryogen pipeline 44, circulate in upstream side compartment inside heat exchanger 32.That is, high temperature The cold-producing medium of state flows into downstream compartment inside heat exchanger 31 and upstream side compartment inside heat exchanger 32, therefore idle call air Heated by downstream compartment inside heat exchanger 31 and this two compartment inside heat exchanger of upstream side compartment inside heat exchanger 32, thus Higher heating capacity can be obtained.
In upstream side compartment inside heat exchanger 32, the cold-producing medium of circulation passes through second from the 4th main refrigerant pipeline 43 Branched-refrigerant pipeline 45 flows into the second main refrigerant pipeline 41.The cold-producing medium having been flowed into the second main refrigerant pipeline 41 passes through the Two air relief valve 53 and expand, then flow into external heat exchanger 33.The cold-producing medium having been flowed into external heat exchanger 33 is from outer Pass sequentially through the 3rd main refrigerant pipeline 42, the 3rd branched-refrigerant pipeline 46 after portion's in the air heat absorption, then divide via gas-liquid It is sucked into motor compressor 30 from device 34.
Under heating mode of operation, set the aperture of mixed air door 62, so that having passed through upstream side compartment inside heat exchanger 32 Idle call in the air most of idle call air pass through downstream compartment inside heat exchanger 31.
Defrosting dehumidifying operation mode shown in Fig. 5 is when attached in external heat exchanger 33 during dehumidifying heating operation Selected operation mode in the case of frost.Under defrosting dehumidifying operation mode, make downstream compartment inside heat exchanger 31 Still play the effect of radiator, make upstream side compartment inside heat exchanger 32 play the effect of heat extractor.And, cold-producing medium bypasses outside compartment Heat exchanger 33 flows.
That is, high-pressure side flow channel switching valve 50 is made to be in and identical state during heating mode of operation.Low-pressure side stream switches Valve 51 flow path switches over, so that the cold-producing medium flowing out from upstream side compartment inside heat exchanger 32 flows into gas-liquid separator 34. The first air relief valve 52 is made to be in swelling state.In addition, cold-producing medium does not flow into the second air relief valve 53.
If making motor compressor 30 work in this condition, the high-pressure refrigerant spraying from motor compressor 30 flows through Flow into downstream compartment inside heat exchanger 31 after first main refrigerant pipeline 40, follow in downstream compartment inside heat exchanger 31 Ring.In downstream compartment inside heat exchanger 31, the cold-producing medium of circulation passes through first branch's system from the second main refrigerant pipeline 41 Cryogen pipeline 44 reaches the first air relief valve 52.The cold-producing medium being expanded by the first air relief valve 52 is flowed into upstream side compartment interior-heat and hands over Parallel operation 32.Cold-producing medium absorbs heat in upstream side compartment inside heat exchanger 32.Circulate in upstream side compartment inside heat exchanger 32 Cold-producing medium stream through the 4th main refrigerant pipeline 43, be then sucked into motor compressor 30 via gas-liquid separator 34.At this Under operation mode, low-temperature refrigerant does not flow into external heat exchanger 33, therefore, by the sky around external heat exchanger 33 The impact of the traveling wind that gas is contacted with external heat exchanger 33, the surface temperature of external heat exchanger 33 can persistently rise And make the frost thawing in external heat exchanger 33, thus defrosted.And, cold-producing medium is in upstream side compartment inside heat exchanger It is heat absorption in 32, therefore, it is possible to be dehumidified.
Weak dehumidifying heating mode of operation shown in Fig. 6 is, for example, when outside air temperature is more than 0 DEG C and lower than 10 DEG C In the case of selected operation mode.Under weak dehumidifying heating mode of operation, make 31 radiatings of downstream compartment inside heat exchanger The effect of device, makes external heat exchanger 33 and upstream side compartment inside heat exchanger 32 play the effect of heat extractor.
That is, high-pressure side flow channel switching valve 50 flow path switches over, so that flowing out from downstream compartment inside heat exchanger 31 Cold-producing medium flow into the inflow entrance of upstream side compartment inside heat exchanger 32.And, low-pressure side flow channel switching valve 51 flow path is carried out Switching, so that the cold-producing medium flowing out from external heat exchanger 33 flows into gas-liquid separator 34.The first air relief valve 52 is made to be in swollen Swollen state, makes the second air relief valve 53 be in non-expansion state.
If making motor compressor 30 work in this condition, the high-pressure refrigerant spraying from motor compressor 30 flows through Flow into downstream compartment inside heat exchanger 31 after first main refrigerant pipeline 40, follow in downstream compartment inside heat exchanger 31 Ring.In downstream compartment inside heat exchanger 31, the cold-producing medium of circulation flows through first branch's system from the second main refrigerant pipeline 41 Expanded by the first air relief valve 52 after cryogen pipeline 44, then flow into upstream side compartment inside heat exchanger 32, in upstream side car Circulate in railway carriage or compartment inside heat exchanger 32.That is, in upstream side compartment inside heat exchanger 32, the suction that idle call air is carried out because of cold-producing medium Heat and be cooled, thus idle call air is dehumidified, and in downstream compartment inside heat exchanger 31, idle call air because Heat release that cold-producing medium is carried out and be heated, heat therefore, it is possible to carry out dehumidifying.
In upstream side compartment inside heat exchanger 32, the cold-producing medium of circulation passes through second from the 4th main refrigerant pipeline 43 Branched-refrigerant pipeline 45 flows into the second main refrigerant pipeline 41.The cold-producing medium having been flowed into the second main refrigerant pipeline 41 will flow Enter external heat exchanger 33.Have been flowed into external heat exchanger 33 cold-producing medium absorb heat from extraneous air after pass sequentially through Three main refrigerant pipelines 42, the 3rd branched-refrigerant pipeline 46, are then sucked into motor compressor via gas-liquid separator 34 30.
When being in weak dehumidifying heating mode of operation, air conditioning control device 22 changes the first air relief valve 52 and the second air relief valve 53 decompression amount, to adjust the operating pressure of upstream side compartment inside heat exchanger 32.In this case, upstream side compartment can be made The operating pressure of inside heat exchanger 32 reaches middle pressure.
Air conditioning control device 22 is based on the upstream side compartment interior-heat being detected by compartment inside heat exchanger temperature sensor 73 The temperature in the air stream downstream of exchanger 32, to control the first air relief valve 52.According to by compartment inside heat exchanger temperature sensing The temperature in the air stream downstream of upstream side compartment inside heat exchanger 32 that device 73 detects, can conclude that moisture removal, is changing In the case of this moisture removal, adjust the first air relief valve based on by the temperature that compartment inside heat exchanger temperature sensor 73 detects 52 decompression amount is such that it is able to make the temperature of the cold-producing medium of inflow upstream side compartment inside heat exchanger 32 change.And, also Can detection temperature based on external heat exchanger temperature sensor 71, to control the second air relief valve 53.
According to circumstances additionally it is possible to make the first air relief valve 52 be in non-expansion state, the second air relief valve 53 is made to be in expansion shape State.
The first frost shown in Fig. 7 reduces operation mode upstream side car e.g. when being in weak dehumidifying heating mode of operation Railway carriage or compartment inside heat exchanger 32 there occurs situation of frost etc. need to carry out frost reduce selected in the case of operating.In addition, it is white Jelly refers to, on the surface of upstream side compartment inside heat exchanger 32, the condensed water of condensation is cooled to below freezing and freezes Phenomenon.
When the first frost reduces the weak dehumidifying heating mode of operation shown in flowing and Fig. 6 of the cold-producing medium under operation mode Mobile phase with.
Reduce under operation mode in the first frost, make downstream compartment inside heat exchanger 31 play the effect of radiator, make Swim side compartment inside heat exchanger 32 and external heat exchanger 33 plays the effect of heat extractor.
That is, high-pressure side flow channel switching valve 50 flow path switches over, so that flowing out from downstream compartment inside heat exchanger 31 Cold-producing medium flow into the inflow entrance of upstream side compartment inside heat exchanger 32 and do not flow to the second air relief valve 53 side.And, low pressure Side flow channel switching valve 51 flow path switches over, so that the cold-producing medium flowing out from upstream side compartment inside heat exchanger 32 flows into gas-liquid Separator 34.Make the first air relief valve 52 be in non-expansion state, make the second air relief valve 53 be in swelling state.
If making motor compressor 30 work in this condition, the high-pressure refrigerant spraying from motor compressor 30 flows through Flow into downstream compartment inside heat exchanger 31 after first main refrigerant pipeline 40, follow in downstream compartment inside heat exchanger 31 Ring, therefore, it is possible to be heated to idle call air by downstream compartment inside heat exchanger 31.
In downstream compartment inside heat exchanger 31, the cold-producing medium stream of circulation is passed through after the second main refrigerant pipeline 41 Second air relief valve 53 and expand, then flow into external heat exchanger 33.Have been flowed into the refrigeration of external heat exchanger 33 Agent is absorbed heat, and then flows into upstream side compartment inside heat exchanger 32 by the 3rd main refrigerant pipeline 42 not inflatedly.? The temperature of cold-producing medium flowing into upstream side compartment inside heat exchanger 32 is because in the heat-absorbing action in external heat exchanger 33 Rise such that it is able to while circulate one side heat release in upstream side compartment inside heat exchanger 32, thus, it is possible to reduce frost.Upper After in trip side compartment inside heat exchanger 32, the cold-producing medium of circulation passes through the 4th main refrigerant pipeline 43, warp is by gas-liquid separator 34 quilt It is sucked into motor compressor 30.
When being in the first frost minimizing operation mode, air conditioning control device 22 is to reduce the decompression amount of the first air relief valve 52 Mode control the first air relief valve 52, so that flowing into the refrigerant temperature of upstream side compartment inside heat exchanger 32 and being in weak dehumidifying Rising is compared during heating mode of operation.Thus, improve frost and reduce ability.And then, to increase the decompression amount of the second air relief valve 53 Mode control the second air relief valve 53 so that flow into external heat exchanger 33 refrigerant temperature decline.Thereby, it is possible to guarantee The caloric receptivity of whole system, can achieve stable operating.
Reduce under operation mode in the first frost, as shown in the mollier diagram in Fig. 8, from the cold-producing medium of compressor 30 ejection Flow into heat release after downstream compartment inside heat exchanger 31, then flow into upstream side compartment inside heat exchanger via the first expansion valve 52 Absorb heat after 32.Then, it is sucked into compressor 30 after flowing into external heat exchanger 33.
Strong dehumidifying heating mode of operation shown in Fig. 9 e.g. works as outside air temperature more than 10 DEG C and less than 25 DEG C In the case of selected operation mode.Under strong dehumidifying heating mode of operation, downstream compartment inside heat exchanger 31 is made to dissipate The effect of hot device, makes external heat exchanger 33 and upstream side compartment inside heat exchanger 32 play the effect of heat extractor.
That is, high-pressure side flow channel switching valve 50 flow path switches over, so that flowing out from downstream compartment inside heat exchanger 31 Cold-producing medium to the second air relief valve 53 side flow and do not flow into the inflow entrance of upstream side compartment inside heat exchanger 32.And, low pressure Side flow channel switching valve 51 flow path switches over, so that the cold-producing medium flowing out from upstream side compartment inside heat exchanger 32 flows into gas-liquid Separator 34.The first air relief valve 52 and the second air relief valve 53 is made to be in swelling state.
If making motor compressor 30 work in this condition, the high-pressure refrigerant spraying from motor compressor 30 flows through Flow into downstream compartment inside heat exchanger 31 after first main refrigerant pipeline 40, follow in downstream compartment inside heat exchanger 31 Ring.In downstream compartment inside heat exchanger 31, the cold-producing medium stream of circulation subtracts by second after the second main refrigerant pipeline 41 Pressure valve 53 and expand, then flow into external heat exchanger 33.The cold-producing medium having been flowed into external heat exchanger 33 is absorbed heat Pass through the 3rd main refrigerant pipeline 42 afterwards, then flow into upstream side compartment inside heat exchanger 32.Have been flowed into upstream side compartment interior-heat The cold-producing medium of exchanger 32 circulates in upstream side compartment inside heat exchanger 32, thus from the heat absorption of idle call in the air.Upper In trip side compartment inside heat exchanger 32, the cold-producing medium of circulation passes through the 4th main refrigerant pipeline 43, then via gas-liquid separator 34 It is sucked into motor compressor 30.
That is, in upstream side compartment inside heat exchanger 32, heat absorption that idle call air is carried out because of cold-producing medium and be cooled, by This dehumidifies to idle call air, and in downstream compartment inside heat exchanger 31, idle call air is carried out because of cold-producing medium Heat release and be heated, heat therefore, it is possible to carry out dehumidifying.
Under strong dehumidifying heating mode of operation, the evaporating pressure of upstream side compartment inside heat exchanger 32 is less than compartment exterior-heat and hands over The evaporating pressure of parallel operation 33, therefore, the caloric receptivity of upstream side compartment inside heat exchanger 32 is compared with weak dehumidifying heating mode of operation Increase, so the moisture removal of time per unit increasing compared with weak dehumidifying heating mode of operation under the heating mode of operation that dehumidifies by force Plus.Thus, it is set as the heating mode of operation that dehumidifies by force.
The first air relief valve 52 can also be made to be in non-expansion state, make the second air relief valve 53 be in swelling state.
When being in strong dehumidifying heating mode of operation, air conditioning control device 22 changes the decompression amount of the second air relief valve 53 to adjust The operating pressure of whole external heat exchanger 33.In this case, the operating pressure of external heat exchanger 33 can be made to reach Middle pressure.
And, identical with during weak dehumidifying heating mode of operation, air conditioning control device 22 is according to by compartment inside heat exchanger temperature The decompression amount to adjust the first air relief valve 52 and the second air relief valve 53 for the temperature that degree sensor 73 detects, so that flow into upstream The temperature of the cold-producing medium of side compartment inside heat exchanger 32 changes.
The second frost shown in Figure 10 reduces operation mode upstream side e.g. when being in strong dehumidifying heating mode of operation Compartment inside heat exchanger 32 there occurs that situation of frost etc. needs to carry out selected pattern in the case of frost minimizing operating.
Reduce under operation mode in the second frost, make downstream compartment inside heat exchanger 31 play the effect of radiator, make Swim side compartment inside heat exchanger 32 and external heat exchanger 33 plays the effect of heat extractor.
Reduce under operation mode in the second frost, as shown in the mollier diagram in Figure 11, from the refrigeration of compressor 30 ejection Agent flows into downstream compartment inside heat exchanger 31 heat release, then flows into external heat exchanger 33 via the second expansion valve 53 and inhales Heat, then flows into upstream side compartment inside heat exchanger 32 and absorbs heat.
The cold-producing medium having been flowed into upstream side compartment inside heat exchanger 32 is because of the heat-absorbing action in external heat exchanger 33 And temperature rises, if temperature is for example higher than 0 DEG C, can circulate to make frost subtract in upstream side compartment inside heat exchanger 32 Few.Relatively the first frost reduces operation mode and the second frost reduces operation mode and finds, reduces operation mode in the first frost Under frost reduce ability higher.Then, in upstream side compartment inside heat exchanger 32, the cold-producing medium of circulation passes through the 4th master Through motor compressor 30 is sucked into by gas-liquid separator 34 after refrigerant tubing 43.
And, when the second frost reduces operation mode, control the second air relief valve 53, so that flowing into external heat exchanger 33 refrigerant temperature than second dehumidifying heating mode of operation when temperature low so that cold-producing medium is in external heat exchanger 33 Middle heat absorption.Then, control the first air relief valve 52 so that flowing into upstream side in the way of the decompression amount making the first air relief valve 52 increases The cold-producing medium of compartment inside heat exchanger 32 becomes superheat state.Thus, frost reduces ability and improves further.
Weak frost shown in Figure 12 reduce operation mode e.g. when being in weak dehumidifying heating mode of operation, strong dehumidifying heats During operation mode, upstream side compartment inside heat exchanger 32 there occurs that situation of frost etc. needs to carry out the situation that frost reduces operating Under selected pattern.Reduce ability in frost and can reduce operation mode, the second frost minimizing operational mode less than the first frost Select described weak frost to reduce operation mode when frost minimizing ability under formula, particular content is hereinafter described.
Reduce under operation mode in weak frost, make downstream compartment inside heat exchanger 31 play the effect of radiator, make compartment Outer heat-exchanger 33 plays the effect of heat extractor, and cold-producing medium bypasses upstream side compartment inside heat exchanger 32 and flows.
That is, high-pressure side flow channel switching valve 50 flow path switches over, so that flowing out from downstream compartment inside heat exchanger 31 Cold-producing medium to the second air relief valve 53 side flow and do not flow into the inflow entrance of upstream side compartment inside heat exchanger 32.And, low pressure Side flow channel switching valve 51 flow path switches over, so that the cold-producing medium flowing out from external heat exchanger 33 flows into gas-liquid separator 34.The second air relief valve 53 is made to be in swelling state.
If making motor compressor 30 work in this condition, the high-pressure refrigerant spraying from motor compressor 30 flows through Flow into downstream compartment inside heat exchanger 31 after first main refrigerant pipeline 40, follow in downstream compartment inside heat exchanger 31 Ring, therefore, it is possible to heat idle call air by downstream compartment inside heat exchanger 31.
In downstream compartment inside heat exchanger 31, the cold-producing medium stream of circulation is passed through after the second main refrigerant pipeline 41 Second air relief valve 53 and expand, then flow into external heat exchanger 33.The cold-producing medium having been flowed into external heat exchanger 33 is inhaled Heat, then passes sequentially through the 3rd main refrigerant pipeline 42, the 3rd branched-refrigerant pipeline 46, the 4th main refrigerant pipeline 43, so It is sucked into motor compressor 30 by by gas-liquid separator 34.
Reduce under operation mode in this weak frost, low-temperature refrigerant does not flow in upstream side compartment inside heat exchanger 32, Transport, from pressure fan 65, the idle call air coming to contact with upstream side compartment inside heat exchanger 32.The temperature of this idle call air Generally equal with outside air temperature, the frost to make upstream side compartment inside heat exchanger 32 hence with idle call air subtracts Few.
As described above, no matter heat pump assembly 20 is in any operation mode, downstream compartment inside heat exchanger 31 all rises The effect of radiator.
As shown in Fig. 2 air conditioning control device 22 has frosting test section 22a, outside described frosting test section 22a detection compartment Whether it is attached with frost on heat exchanger 33.If subtracted from outside air temperature TG being detected by outside air temperature sensor 70 The value obtaining after going the surface temperature of external heat exchanger 33 being detected by external heat exchanger temperature sensor 71 is It is greater than the larger value of 20 (DEG C), then frosting test section 22a is judged as detecting frosting.That is, if in compartment exterior-heat Frost is attached with exchanger 33, then cold-producing medium can not absorb heat in external heat exchanger 33, and refrigerant temperature does not just rise, root To carry out frosting detection according to this situation.Thus, as long as can interpolate that whether external heat exchanger 33 there occurs frosting It is worth, then described value 20 can also be other values.Furthermore it is also possible to whether direct detection is attached with frost.
In addition, air conditioning control device 22 also has frost judging part 22b, described frost judging part 22b judges upstream side car Railway carriage or compartment inside heat exchanger 32 reduces operating the need of frost.Frost judging part 22b is based on by compartment inside heat exchanger temperature sensing The surface temperature of the upstream side compartment inside heat exchanger 32 that device 73 detects, when such as surface temperature is lower 3 DEG C than freezing point temperature In the case of below the temperature of (frost judgement temperature), it is set to upstream side compartment inside heat exchanger 32 and there occurs frost, thus white Freeze judging part 22b to judge to need frost to reduce operating；On the other hand, if surface temperature judges temperature higher than frost, set For there is not frost, thus frost judging part 22b judges not need frost to reduce operating.Judge that the method for frost is not limited to This, can judge whether using well-known method frost.
Then, illustrate to by the rate-determining steps that air conditioning control device 22 is carried out with reference to Figure 14～Figure 19.Figure 14 illustrates Mastery routine.In step SA1 after start-up, the outside air temperature that reading outside air temperature sensor 70 detects TG.In step SA2 that then step SA1 is carried out, outside air temperature TG is less than with 0 DEG C or more than 0 DEG C and 25 Below DEG C, judged again or higher than 25 DEG C.It should be noted that this judgement temperature is not limited to 0 DEG C, 25 DEG C, permissible Described judgement temperature is set as being capable of the arbitrary value of the purpose of the present invention.
In the case of judging that in step SA2 outside air temperature TG is less than 0 DEG C, enter step SA3, heat pump is filled Put 20 switch to heating mode of operation after enter mastery routine " return ".Under heating mode of operation, as air conditioner in compartment The blowing pattern of group 21, main selection is heating mode.And, so that mixed air door 62 is worked, so that the temperature of blow out air reaches To target temperature.
When judging outside air temperature TG in step SA2 more than 0 DEG C and in the case of less than 25 DEG C, enter step Rapid SA4, carries out the heating mode of operation selection process that dehumidifies.Dehumidifying heating mode of operation selection processes and refers to, selection will switch to Weak dehumidifying heating mode of operation or the process of the strong heating mode of operation that dehumidifies.In step SA4, when outside air temperature TG is less than Enter step SA5 in the case of 10 DEG C, heat pump assembly 20 is switched to and after weak dehumidifying heating mode of operation, enters " returning of mastery routine Return ".In step SA4, in the case that outside air temperature TG is more than 10 DEG C, then enter step SA6, by heat pump assembly 20 " return " of mastery routine is entered after switching to strong dehumidifying heating mode of operation.That is, when outside air temperature is less than 10 DEG C of situation Under, the humidity of idle call air is also low, thus even dehumidifying effect is low, therefore selecting weak dehumidifying heating mode of operation；Another Aspect, in the case that outside air temperature is more than 10 DEG C, the humidity of idle call air is high, thus preferably higher dehumidifying energy Power, therefore selects the strong heating mode of operation that dehumidifies.
In the case of judging that in step SA2 outside air temperature TG is higher than 25 DEG C, enter step SA7, by heat pump Device 20 enters " return " of mastery routine after switching to cooling operation pattern.
In the case of entering step SA5 or step SA6, carry out the subprogram shown in Figure 15 and control.This control is to work as External heat exchanger 33 switches to the control of defrosting dehumidifying operation mode in the case of there occurs frosting.
In step SB1, proceed the weak dehumidifying heating mode of operation of step SA5 in the flow chart shown in Figure 14, Operating under the strong dehumidifying heating mode of operation of step SA6.In step SB2, judge that compartment exterior-heat is handed over by frosting test section 22a Whether parallel operation 33 there occurs frosting.Judgement in step SB2 is " no (NO) ", and that is, external heat exchanger 33 does not occur frosting In the case of, proceed the dehumidifying heating operation of step SB1.Judgement in step SB2 is " being (YES) ", that is, judge In the case that external heat exchanger 33 there occurs frosting, enter step SB3, heat pump assembly 20 is switched to defrosting dehumidifying operating Pattern.
In step SB4, carry out defrosting and judge.Carry out defrosting judge when, identical with step SB2, by frosting test section 22a judges whether external heat exchanger 33 there occurs frosting, in the case of being judged as frosting, has represented defrosting Terminate, hence into " return ", in the case of being judged as there occurs frosting, represent that defrosting does not terminate, thus until defrosting Proceed defrosting dehumidifying operating till end.
In the case of have selected weak dehumidifying heating mode of operation in step SA5 shown in Figure 14, carry out shown in Figure 16 Subprogram control.The control that this control is discussed further below：When required dehumidifying effect is under weak dehumidifying heating mode of operation Dehumidifying effect in the case of, continue keep weak dehumidifying heating mode of operation, when want improve dehumidifying effect in the case of, Strong dehumidifying heating mode of operation then can be automatically switched to.
In step SC1, proceed under the weak dehumidifying heating mode of operation of step SA5 in the flow chart shown in Figure 14 Operating.In following step SC2, judge for selecting whether the DEF button of defrosting blowing pattern is " connecting (ON) ". If DEF button is " on ", blowing pattern becomes defrosting blowing pattern.
DEF button " connecting (ON) " refers to that passenger wants to remove the situation of the mist on front screen, and this shows that passenger requires Stronger dehumidifying effect.It is judged as "No" in step SC2, in the case of representing that passenger does not require stronger dehumidifying effect, continue Continue and carry out weak dehumidifying heating operation.It is judged as "Yes" in step SC2, represent that passenger requires the situation of stronger dehumidifying effect Under, then enter step SC3, the pattern of introducing air into is set to outdoor air and introduces pattern.Its reason is as follows：Have selected weak dehumidifying In the outside air temperature scope of heating mode of operation, it is inferred as that humidity is relatively low, therefore introduce the lower idle call air of humidity.
Described step SC2 is whether to be in the blowing pattern that defrosting blowing pattern is detected in compartment air conditioning unit 21 Detection scheme.
In step SC4 that then step SC3 is carried out, heat pump assembly 20 is switched to strong dehumidifying heating mode of operation.By This improves dehumidifying effect, therefore, it is possible to remove the mist on front window early.
In step SC5, judge whether DEF button is " disconnecting (OFF) ".If DEF button is still " on ", Then proceed the heating operation that dehumidifies by force.If DEF button is 'switched ', enter " return ".
It should be noted that process can also be timed, step SC5 is replaced with this.I.e. additionally it is possible to switch to by force After beginning to pass through the stipulated time after dehumidifying heating mode of operation, operation mode is made to return to weak dehumidifying heating mode of operation.
In the case of have selected weak dehumidifying heating mode of operation in step SA5 shown in Figure 14, carry out shown in Figure 17 Subprogram control.This control is to automatically switch the control of dehumidifying effect according to the humidity in compartment.
In step SD1, proceed under the weak dehumidifying heating mode of operation of step SA5 in the flow chart shown in Figure 14 Operating.In following step SD2, read in humidity RH in the compartment being detected by humidity sensor 76.
In step SD3, judge that in compartment, humidity RH is whether more than 60%.If being judged as compartment in step SD3 Interior humidity RH is less than 60% then it represents that the humidity in compartment is not so high, therefore proceeds weak dehumidifying heating operation.Separately On the one hand, if being judged as that in step SD3 in compartment, humidity RH is more than 60%, entering step SD4, introducing air into mould Formula is set to outdoor air and introduces pattern.This is the idle call air lower in order to introduce humidity.
In following step SD5, heat pump assembly 20 is switched to strong dehumidifying heating mode of operation.Thus improve dehumidifying Ability, therefore, it is possible to make humidity in compartment decline.
Then, step SD6 is read in humidity RH again in compartment.In following step SD7, judge compartment endogenous dampness Whether degree RH is less than 50%.If being judged as that in step SD7 humidity RH in compartment is less than 50% then it represents that humidity in compartment Decline, hence into " return ".On the other hand, if being judged as that in step SD7 in compartment, humidity RH is more than 50%, Proceed to dehumidify by force heating operation.
It should be noted that described judgment value is not limited to 50%, 60%, can be set as described judgment value can be real The arbitrary value of the existing purpose of the present invention.
The situation of some dehumidifying heating mode of operation is have selected after entering step SA4 in mastery routine shown in Figure 14 Under, the subprogram carrying out the dehumidifying heating mode of operation shown in Figure 18 controls.This control is to make upstream side compartment inside heat exchanger The control that 32 frost reduces.
In step SE1, proceed the weak dehumidifying heating mode of operation of step SA5, step in the flow chart shown in Figure 14 Operating under the strong dehumidifying heating mode of operation of rapid SA6.In step SE2, judged in the compartment of upstream side by frost judging part 22b Heat exchanger 32 reduces operating the need of frost.It is judged as not occurring frost in step SE2, representing does not need to upstream side In the case that compartment inside heat exchanger 32 carries out frost minimizing operating, proceed the dehumidifying heating operation of step SE1.In step It is judged as there occurs frost in SE2, represent the situation needing that upstream side compartment inside heat exchanger 32 is carried out with frost reduces operating Under, enter step SE3, introduce air into pattern switching and introduce pattern for outdoor air.Then, enter step SE4, read in outdoor Air themperature TG.Then, enter step SE5, outside air temperature TG is less than with 10 DEG C or sentences more than 10 DEG C Disconnected.
In the case of judging that in step SE5 outside air temperature TG is less than 10 DEG C, enter step SE6, judge to work as Whether front operation mode is weak dehumidifying heating mode of operation.When the judged result in step SE6 is "Yes", i.e. current fortune In the case that rotary-die type is weak dehumidifying heating mode of operation, heat pump assembly 20 is switched to the first frost to reduce operation mode.So Enter step SE8 afterwards, carry out judging with step SE2 identical frost, when upstream side compartment inside heat exchanger 32 still there occurs Enter step SE3 in the case of frost, on the other hand, enter in the case that upstream side compartment inside heat exchanger 32 does not have frost Enter " return ".
In addition, when the judged result in step SE6 is "No", that is, current operation mode is strong dehumidifying heating operation mould In the case of formula, enter step SE9, heat pump assembly 20 is switched to the second frost to reduce operation mode.Subsequently into step SE8, carries out judging with step SE2 identical frost, when upstream side compartment inside heat exchanger 32 still there occurs the situation of frost Under proceed second frost reduce operating, on the other hand, when upstream side compartment inside heat exchanger 32 does not have the situation of frost Lower entrance " return ".
In addition, in the outside air temperature in step SE5 judges, when situation more than 10 DEG C for outside air temperature TG Under, enter step SE10, heat pump assembly 20 is switched to weak frost to reduce operation mode.Reduce under operation mode in weak frost, The cold-producing medium becoming as shown in Figure 12 does not flow into the state in upstream side compartment inside heat exchanger 32.Now, outdoor air More than 10 DEG C and air introduces pattern and introduces pattern, therefore more than about 10 DEG C of idle call air quilt for outdoor air temperature It is sent to upstream side compartment inside heat exchanger 32, compartment inside heat exchanger in upstream side can be made using the temperature of this idle call air 32 frost reduces.
It should be noted that this judgement temperature is not limited to 10 DEG C, described judgement temperature can be set as being capable of The arbitrary value of the purpose of the present invention.
Then, enter step SE8, carry out judging with step SE2 identical frost, when upstream side compartment inside heat exchanger 32 In the case of still there occurs frost, proceed weak frost and reduce operating, on the other hand, when upstream side compartment inside heat exchanger 32 do not have entrance " return " in the case of frost.
In the case of have selected dehumidifying heating mode of operation after entering step SA4 in mastery routine shown in Figure 14, also The subprogram that the dehumidifying heating mode of operation shown in Figure 19 can be carried out controls, and to replace the subprogram control shown in Figure 18 with this System.This control is also the control making the frost of upstream side compartment inside heat exchanger 32 reduce.
Step SF1 is identical to step SE3 with step SE1 in the flow chart shown in Figure 18 to step SF3.
In step SF4, heat pump assembly 20 is switched to weak frost to reduce operation mode.Then, enter step SF10 to set After timing clock, enter step SF5, judge to start whether warp since heat pump assembly 20 is switched to weak frost minimizing operation mode Spend the stipulated time (such as 3 minutes to 5 minutes about).When the judged result in step SF5 is "Yes", that is, represents and have passed through Enter step SF6 in the case of stipulated time, judge that being switched to weak frost reduces the tightly previous operating before operation mode Which in weak dehumidifying heating mode of operation and strong dehumidifying heating mode of operation be pattern be.
In step SF6, when the tightly previous operation mode being switched to weak frost minimizing operation mode heats for weak dehumidifying Enter step SF7 in the case of operation mode, heat pump assembly 20 is switched to the first frost to reduce operation mode.Then, enter Step SF8, carries out judging with step SF2 identical frost, when upstream side compartment inside heat exchanger 32 still there occurs frost In the case of enter step SF5.On the other hand, enter in the case that upstream side compartment inside heat exchanger 32 does not have frost and " return Return ".
In step SF6, when the tightly previous operation mode being switched to weak frost minimizing operation mode is strong dehumidifying system Enter step SF9 in the case of heat run pattern, heat pump assembly 20 is switched to the second frost to reduce operation mode.Then, enter Enter step SF8, carry out judging with step SF2 identical frost, when upstream side compartment inside heat exchanger 32 still there occurs frost In the case of proceed second frost reduce operating, on the other hand, when upstream side compartment inside heat exchanger 32 does not have frost In the case of enter " return ".
That is, air conditioning control device 22 is configured to as follows：When judging to need in the compartment of upstream side by frost judging part 22b In the case that heat exchanger 32 carries out frost minimizing operating, heat pump assembly 20 is switched to weak frost to reduce by air conditioning control device 22 Operating is so that heat pump assembly 20 carries out the weak frost minimizing operating of stipulated time, then, when by frost judging part 22b continuation judgement In the case of going out to need upstream side compartment inside heat exchanger 32 is carried out frost minimizing operating, if weak frost reduces operation mode Tightly previous operation mode be weak dehumidifying heating mode of operation, then air conditioning control device 22 by operation mode switch to first frost Freeze and reduce operation mode, on the other hand, if the tightly previous operation mode that weak frost reduces operation mode is strong dehumidifying heated Operation mode, then air conditioning control device 22 by operation mode switch to second frost reduce operation mode.
As described above, the air conditioner for vehicles 1 according to involved by this embodiment, can include weak dehumidifying system Switch over to operate, wherein, described between multiple operation modes of heat run pattern and the second dehumidifying heating mode of operation Under weak dehumidifying heating mode of operation, make the cold-producing medium that sprays from compressor 30 successively downstream compartment inside heat exchanger 31, the Circulate in one air relief valve 52, upstream side compartment inside heat exchanger 32 and external heat exchanger 33, by downstream compartment interior-heat Exchanger 31 is used as radiator and upstream side compartment inside heat exchanger 32 is used as heat extractor；In the described second dehumidifying heating operation Under pattern, make from compressor 30 spray cold-producing medium successively in downstream compartment inside heat exchanger 31, the second air relief valve 53, compartment Circulate in outer heat-exchanger 33 and upstream side compartment inside heat exchanger 32, downstream compartment inside heat exchanger 31 is used as radiating Upstream side compartment inside heat exchanger 32 is simultaneously used as heat extractor by device.
That is, under weak dehumidifying heating mode of operation, the high-temperature high-pressure refrigerant spraying from compressor 30 is supplied to downstream Compartment inside heat exchanger 31, on the other hand, the cold-producing medium after being reduced pressure by the first air relief valve 52 is supplied to upstream side compartment Inside heat exchanger 32.Upstream side compartment inside heat exchanger 32 is arranged on the upstream side on air-flow direction, and downstream compartment Inside heat exchanger 31 is then arranged on side downstream, and therefore, the air after being dehumidified by upstream side compartment inside heat exchanger 32 is in quilt It is supplied to compartment after downstream compartment inside heat exchanger 31 heating.
In addition, under strong dehumidifying heating mode of operation, equally, downstream compartment inside heat exchanger 31 become radiator and Upstream side compartment inside heat exchanger 32 becomes heat extractor, and flows the cold-producing medium passing through in external heat exchanger 33 and be supplied to Upstream side compartment inside heat exchanger 32, therefore, the evaporating pressure in upstream side compartment inside heat exchanger 32 is less than compartment exterior-heat and hands over Evaporating pressure in parallel operation 33, the caloric receptivity thus compared with weak dehumidifying heating mode of operation, under strong dehumidifying heating mode of operation Increase.Thus, the dehumidifying effect under strong dehumidifying heating mode of operation improves.
On the other hand, under weak dehumidifying heating mode of operation and strong dehumidifying heating mode of operation both patterns, will be from pressure The high-temperature high-pressure refrigerant that contracting machine 30 sprays is supplied to downstream compartment inside heat exchanger 31, and this downstream compartment inside heat exchanger 31 are arranged on the downstream on air-flow direction, therefore, it is possible to fully heat to idle call air.
Thus, the heating capacity during heating operation that can either fully guarantee to dehumidify, can suitably control dehumidifying energy again Power.
In the case that external heat exchanger 33 there occurs frosting, by switch to defrosting dehumidifying operation mode, make from The cold-producing medium that compressor 30 sprays bypasses external heat exchanger 33 and flows.Thereby, it is possible to make compartment exterior-heat using outdoor air The frost of exchanger 33 efficiently melts.
On the pipeline of the refrigerant inlet side the first air relief valve 52 being arranged on upstream side compartment inside heat exchanger 32, by Two air relief valve 53 are arranged on the pipeline of refrigerant inlet side of external heat exchanger 33, therefore, heat being in weak dehumidifying The cold-producing medium that upstream side compartment inside heat exchanger 32 can be made during operation mode reaches middle pressure, and, heats being in strong dehumidifying The cold-producing medium of external heat exchanger 33 can be made during operation mode to reach middle pressure.Thereby, it is possible to meticulously adjust dehumidifying effect.
The decompression amount of the first air relief valve 52, the decompression amount of the second air relief valve 53 can be changed by air conditioning control device 22, because This can adjust upstream side compartment inside heat exchanger 32, the operating pressure of external heat exchanger 33.Thereby, it is possible to meticulously adjust Whole dehumidifying effect.
The temperature being capable of air stream downstream based on upstream side compartment inside heat exchanger 32 controls the first air relief valve 52 With the second air relief valve 53, therefore, it is possible to adjust dehumidifying effect exactly according to current moisture removal.
In the case that blowing pattern is defrosting blowing pattern, make heat pump assembly 20 work under strong dehumidifying heating mode of operation Make, therefore, it is possible to remove the mist on glass for vehicle window early.
Air conditioner for vehicles 1 according to involved by this embodiment, sets the different weak dehumidifying of dehumidifying effect and heats Operation mode and strong dehumidifying heating mode of operation, carry out the first frost when being in weak dehumidifying heating mode of operation and reduce operational mode Operating under formula, then carries out frost and reduces ability different from the first frost minimizing operating when being in strong dehumidifying heating mode of operation Second frost of pattern reduces the operating under operation mode, therefore, when making heat pump assembly 20 with to require moisture removal corresponding In the case of working under dehumidifying effect, can efficiently carry out frost and reduce operating.
When being in the first frost minimizing operation mode, make the temperature drop of the cold-producing medium of inflow external heat exchanger 33 To be absorbed heat, so that the temperature of the cold-producing medium of inflow upstream side compartment inside heat exchanger 32 is increased, therefore, it is possible to efficiently reduce The frost of upstream side compartment inside heat exchanger 32.
When being in the second frost minimizing operation mode, cold-producing medium is made to absorb heat at external heat exchanger 33, so that The cold-producing medium of superheat state flows into upstream side compartment inside heat exchanger 32, hands over therefore, it is possible to efficiently reduce upstream side compartment interior-heat The frost of parallel operation 32.
Operation mode is reduced by the weak frost being set to make cold-producing medium bypass upstream side compartment inside heat exchanger 32 flowing, from And comfortableness can either be kept in the case of the humidity in compartment will not be made hastily to increase, upstream side compartment can be reduced again The frost of inside heat exchanger 32.
In the case of needing upstream side compartment inside heat exchanger 32 is carried out with frost minimizing operating, switch to and make cold-producing medium The weak frost bypassing upstream side compartment inside heat exchanger 32 flowing reduces operation mode, thus can either be will not make in compartment Humidity keeps comfortableness in the case of hastily rising, and can reduce the frost of upstream side compartment inside heat exchanger 32 again, then, If also needing to carry out frost to reduce operating, can continue to carry out corresponding with the tightly previous heating mode of operation that dehumidifies, Frost reduces the higher frost of ability and reduces operating, therefore, it is possible to reliably reduce the frost of upstream side compartment inside heat exchanger 32 Freeze.
It should be noted that in said embodiment, the high-pressure side flow channel switching valve 50 of described heat pump assembly 20 and low This two switching valves of pressure side flow channel switching valve 51 to be all made up of three-way valve, but high-pressure side flow channel switching valve 50 and/or low pressure Side flow channel switching valve 51 can also be combined composition with two switch valves, and the switching mechanism for stream does not particularly limit Fixed.
And, in said embodiment, situation about air conditioner for vehicles 1 being arranged on electric automobile is carried out Illustrate, but be not limited thereto, for example, also air conditioner for vehicles 1 can be arranged on including electromotor and electric drive motor Various types of automobiles such as hybrid vehicle on.
All aspects in above-mentioned embodiment all only simple examples, do not constitute the limit to the present invention Qualitative interpretation.And, belong to the deformation in the equivalency range of claim or modification is all included in the scope of the present invention.
- industrial applicability-
In sum, air conditioner for vehicles involved in the present invention can be arranged on such as electric automobile, hybrid power On automobile etc..
- symbol description-
1 air conditioner for vehicles
20 heat pump assemblies
Air conditioning unit in 21 compartments
22 air conditioning control devices
22a frosting test section (frosting testing agency)
22b frost judging part
30 motor compressors (compressor)
31 downstream compartment inside heat exchanger (the first compartment inside heat exchanger)
32 upstream side compartment inside heat exchanger (the second compartment inside heat exchanger)
33 external heat exchanger
40～43 the first～the 4th main refrigerant pipelines (refrigerant tubing)
44～46 the first～the 3rd branched-refrigerant pipelines (refrigerant tubing)
52 first air relief valve
53 second air relief valve
62 mixed air doors
65 pressure fan
70 outside air temperature sensors
73 compartment inside heat exchanger temperature sensors (temperature testing organization)

Claims (16)

1. a kind of air conditioner for vehicles, including：
Heat pump assembly, the compressor that described heat pump assembly comprises compression refrigerant, the first compartment interior-heat being arranged in compartment are handed over Parallel operation, the second compartment inside heat exchanger being arranged on the air stream upstream side of this first compartment inside heat exchanger in compartment, setting External heat exchanger outside compartment, the first air relief valve and the second air relief valve, described heat pump assembly is will by refrigerant tubing Described compressor, described first compartment inside heat exchanger, described second compartment inside heat exchanger, described first air relief valve, described Second air relief valve and described external heat exchanger connect and constitute；
Air conditioning unit in compartment, the described first compartment inside heat exchanger of air conditioning unit storage and described second compartment in described compartment Inside heat exchanger, and have idle call air is sent to this first compartment inside heat exchanger and this second compartment inside heat exchanger Pressure fan, air conditioning unit in described compartment be configured to：After generating adjusted good air, described adjusted good air is supplied To compartment；And
Air conditioning control device, air conditioning unit in the described air conditioning control device described heat pump assembly of control and described compartment,
Described air conditioner for vehicles is characterised by：
Described air conditioning control device is including multiple fortune of the first dehumidifying heating mode of operation and the second dehumidifying heating mode of operation Switch between rotary-die type to make described heat pump assembly work, under the described first dehumidifying heating mode of operation, make from described The cold-producing medium that compressor sprays is handed in described first compartment inside heat exchanger, described first air relief valve, described second compartment interior-heat In parallel operation and described external heat exchanger, described first compartment inside heat exchanger is used as radiator and incites somebody to action by circulation successively Described second compartment inside heat exchanger is used as heat extractor, under the described second dehumidifying heating mode of operation, makes from described compressor The cold-producing medium spraying is in described first compartment inside heat exchanger, described second air relief valve, described external heat exchanger and institute State in the second compartment inside heat exchanger circulation successively and described first compartment inside heat exchanger is used as radiator and by described the Two compartment inside heat exchanger are used as heat extractor.
2. air conditioner for vehicles according to claim 1 it is characterised in that：
Described air conditioner for vehicles includes frosting testing agency, and described external heat exchanger detects in described frosting testing agency Frosting situation,
When detecting that described external heat exchanger there occurs frosting by described frosting testing agency, described air conditioning control device Defrosting dehumidifying operation mode is switched to make described heat pump assembly work, under described defrosting dehumidifying operation mode, described air-conditioning Control device make from described compressor spray cold-producing medium described first compartment inside heat exchanger, described first air relief valve and Circulate and bypass described external heat exchanger flowing in described second compartment inside heat exchanger successively.
3. air conditioner for vehicles according to claim 1 and 2 it is characterised in that：
Described first air relief valve is configured to change its decompression amount, and is arranged on the system with described second compartment inside heat exchanger On the pipeline that cryogen entrance side connects,
Described second air relief valve is configured to change its decompression amount, and is arranged on the cold-producing medium with described external heat exchanger On the pipeline that entrance side connects.
4. air conditioner for vehicles according to claim 3 it is characterised in that：
Described first air relief valve and described second air relief valve are controlled by described air conditioning control device,
When being in the first dehumidifying heating mode of operation, described air conditioning control device utilize described first air relief valve decompression amount Lai Adjust the operating pressure of described second compartment inside heat exchanger, on the other hand, when being in the second dehumidifying heating mode of operation, institute State the operating pressure that air conditioning control device adjusts described external heat exchanger using the decompression amount of described second air relief valve.
5. air conditioner for vehicles according to claim 4 it is characterised in that：
Described air conditioner for vehicles includes temperature testing organization, and described temperature testing organization detects that described second compartment interior-heat is handed over The temperature in the air stream downstream of parallel operation,
The sky based on the described second compartment inside heat exchanger being detected by described temperature testing organization for the described air conditioning control device The temperature of airflow downstream side, to control described first air relief valve and described second air relief valve.
6. air conditioner for vehicles according to claim 1 and 2 it is characterised in that：
The air conditioning unit multiple blowing patterns having including defrosting blowing pattern in described compartment, under described defrosting blowing pattern Supply air-conditioner wind to the glass for vehicle window in compartment,
Described air conditioner for vehicles includes mode detection mechanism of drying, and described blowing mode detection mechanism is detected in described compartment Air conditioning unit whether be in defrosting blowing pattern,
By described blowing mode detection mechanism detect in described compartment air conditioning unit be in defrosting blowing pattern in the case of, Described air conditioning control device makes described heat pump assembly work under the second dehumidifying heating mode of operation.
7. air conditioner for vehicles according to claim 3 it is characterised in that：
The air conditioning unit multiple blowing patterns having including defrosting blowing pattern in described compartment, under described defrosting blowing pattern Supply air-conditioner wind to the glass for vehicle window in compartment,
Described air conditioner for vehicles includes mode detection mechanism of drying, and described blowing mode detection mechanism is detected in described compartment Air conditioning unit whether be in defrosting blowing pattern,
By described blowing mode detection mechanism detect in described compartment air conditioning unit be in defrosting blowing pattern in the case of, Described air conditioning control device makes described heat pump assembly work under the second dehumidifying heating mode of operation.
8. air conditioner for vehicles according to claim 4 it is characterised in that：
The air conditioning unit multiple blowing patterns having including defrosting blowing pattern in described compartment, under described defrosting blowing pattern Supply air-conditioner wind to the glass for vehicle window in compartment,
Described air conditioner for vehicles includes mode detection mechanism of drying, and described blowing mode detection mechanism is detected in described compartment Air conditioning unit whether be in defrosting blowing pattern,
By described blowing mode detection mechanism detect in described compartment air conditioning unit be in defrosting blowing pattern in the case of, Described air conditioning control device makes described heat pump assembly work under the second dehumidifying heating mode of operation.
9. air conditioner for vehicles according to claim 5 it is characterised in that：
The air conditioning unit multiple blowing patterns having including defrosting blowing pattern in described compartment, under described defrosting blowing pattern Supply air-conditioner wind to the glass for vehicle window in compartment,
Described air conditioner for vehicles includes mode detection mechanism of drying, and described blowing mode detection mechanism is detected in described compartment Air conditioning unit whether be in defrosting blowing pattern,
By described blowing mode detection mechanism detect in described compartment air conditioning unit be in defrosting blowing pattern in the case of, Described air conditioning control device makes described heat pump assembly work under the second dehumidifying heating mode of operation.
10. a kind of air conditioner for vehicles, it includes：
Heat pump assembly, the compressor that described heat pump assembly comprises compression refrigerant, the first compartment interior-heat being arranged in compartment are handed over Parallel operation, the second compartment inside heat exchanger being arranged on the air stream upstream side of this first compartment inside heat exchanger in compartment, setting External heat exchanger outside compartment and the first air relief valve that can change decompression amount, described heat pump assembly is by refrigerant pipe Road by described compressor, described first compartment inside heat exchanger, described second compartment inside heat exchanger, described first air relief valve with And described external heat exchanger connects and constitutes；
Air conditioning unit in compartment, the described first compartment inside heat exchanger of air conditioning unit storage and described second compartment in described compartment Inside heat exchanger, and have idle call air is sent to this first compartment inside heat exchanger and this second compartment inside heat exchanger Pressure fan, air conditioning unit in described compartment be configured to：After generating adjusted good air, described adjusted good air is supplied To compartment；And
Air conditioning control device, air conditioning unit in the described air conditioning control device described heat pump assembly of control and described compartment,
Described air conditioner for vehicles is characterised by：
Described first air relief valve is arranged on the pipeline of refrigerant inlet side of described second compartment inside heat exchanger,
Described first air relief valve is controlled by described air conditioning control device,
Described air conditioning control device is including multiple fortune of the first dehumidifying heating mode of operation and the first frost minimizing operation mode Switch between rotary-die type to make described heat pump assembly work, described first air relief valve is controlled by described air conditioning control device Become：Compared with when being in the first dehumidifying heating mode of operation, flow into described second being in when the first frost reduces operation mode The refrigerant temperature of compartment inside heat exchanger rises；Wherein, by described first car under the described first dehumidifying heating mode of operation Railway carriage or compartment inside heat exchanger is used as radiator, described second compartment inside heat exchanger is used as heat extractor, reduces operating in the first frost The frost being in the described second compartment inside heat exchanger of described first dehumidifying heating mode of operation is made to reduce under pattern.
11. air conditioner for vehicles according to claim 10 it is characterised in that：
The operation mode of described air conditioning control device includes the second dehumidifying heating mode of operation and the second frost reduces operation mode, Second air relief valve is controlled into by described air conditioning control device：Compared with when being in the second dehumidifying heating mode of operation, it is being in When two frosts reduce operation mode, so that the refrigerant temperature of the described external heat exchanger of inflow is declined and to hand in this compartment exterior-heat Absorb heat at parallel operation, wherein, under the described second dehumidifying heating mode of operation, described first compartment inside heat exchanger is used as radiating Device, described second compartment inside heat exchanger is used as heat extractor and makes the caloric receptivity of this second compartment inside heat exchanger be more than the The caloric receptivity of this second compartment inside heat exchanger under one dehumidifying heating mode of operation, reduces operation mode in described second frost Under make to be in the frost of the described second compartment inside heat exchanger of the second dehumidifying heating mode of operation and reduce.
12. air conditioner for vehicles according to claim 10 or 11 it is characterised in that：
Described air conditioning control device also switches to the 3rd frost to be reduced operation mode to make described heat pump assembly work, wherein, Described 3rd frost reduces makes cold-producing medium bypass described second compartment inside heat exchanger and flow under operation mode.
13. air conditioner for vehicles according to claim 12 it is characterised in that：
Described air conditioner for vehicles includes frost decision mechanism, and described frost decision mechanism judges whether to need to described second Compartment inside heat exchanger carries out frost and reduces operating,
When judging to need described second compartment inside heat exchanger carried out with frost to reduce operating by described frost decision mechanism In the case of, described heat pump assembly is switched to the 3rd frost to reduce operating by described air conditioning control device, so that described heat pump dress Put and carry out the 3rd frost at the appointed time and reduce operating, then, right when continuing to be judged as to need by described frost decision mechanism In the case that described second compartment inside heat exchanger carries out frost minimizing operating, if being switched to the 3rd frost to reduce operational mode When the tightly previous operation mode of formula is the first dehumidifying heating mode of operation, described heat pump assembly is cut by described air conditioning control device It is changed to the first frost and reduces operation mode, on the other hand, if being switched to the 3rd frost to reduce the tightly previous of operation mode When operation mode is the second dehumidifying heating mode of operation, described heat pump assembly is switched to the second frost by described air conditioning control device Reduce operation mode.
A kind of 14. air conditioner for vehicles, it includes：
Heat pump assembly, the compressor that described heat pump assembly comprises compression refrigerant, the first compartment interior-heat being arranged in compartment are handed over Parallel operation, the second compartment inside heat exchanger being arranged on the air stream upstream side of this first compartment inside heat exchanger in compartment, setting External heat exchanger outside compartment and the second air relief valve that can change decompression amount, described heat pump assembly is by refrigerant pipe Road by described compressor, described first compartment inside heat exchanger, described second compartment inside heat exchanger, described second air relief valve with And described external heat exchanger connects and constitutes；
Air conditioning unit in compartment, the described first compartment inside heat exchanger of air conditioning unit storage and described second compartment in described compartment Inside heat exchanger, and have idle call air is sent to this first compartment inside heat exchanger and this second compartment inside heat exchanger Pressure fan, air conditioning unit in described compartment be configured to：After generating adjusted good air, described adjusted good air is supplied To compartment；And
Air conditioning control device, air conditioning unit in the described air conditioning control device described heat pump assembly of control and described compartment,
Described air conditioner for vehicles is characterised by：
Described second air relief valve is arranged on the pipeline of refrigerant inlet side of described external heat exchanger,
Described second air relief valve is controlled by described air conditioning control device,
Described air conditioning control device is including multiple fortune of the second dehumidifying heating mode of operation and the second frost minimizing operation mode Switch between rotary-die type to make described heat pump assembly work, described second air relief valve is controlled by described air conditioning control device Become：Compared with when being in the second dehumidifying heating mode of operation, make the described car of inflow being in when the second frost reduces operation mode The refrigerant temperature of railway carriage or compartment outer heat-exchanger declines to absorb heat at this external heat exchanger, wherein, in the described second dehumidifying system Under heat run pattern, described first compartment inside heat exchanger is used as to inhale as radiator, by described second compartment inside heat exchanger Hot device and make this second compartment inside heat exchanger caloric receptivity more than first dehumidifying heating mode of operation under this second compartment The caloric receptivity of inside heat exchanger, reducing in described second frost makes to be in the institute of the second dehumidifying heating mode of operation under operation mode The frost stating the second compartment inside heat exchanger reduces.
15. air conditioner for vehicles according to any one of claim 14 it is characterised in that：
Described air conditioning control device also switches to the 3rd frost to be reduced operation mode to make described heat pump assembly work, wherein, Described 3rd frost reduces makes cold-producing medium bypass described second compartment inside heat exchanger and flow under operation mode.
16. air conditioner for vehicles according to claim 15 it is characterised in that：
Described air conditioner for vehicles includes frost decision mechanism, and described frost decision mechanism judges whether to need to described second Compartment inside heat exchanger carries out frost and reduces operating,
When judging to need described second compartment inside heat exchanger carried out with frost to reduce operating by described frost decision mechanism In the case of, described heat pump assembly is switched to the 3rd frost to reduce operating by described air conditioning control device, so that described heat pump dress Put and carry out the 3rd frost at the appointed time and reduce operating, then, right when continuing to be judged as to need by described frost decision mechanism In the case that described second compartment inside heat exchanger carries out frost minimizing operating, if being switched to the 3rd frost to reduce operational mode When the tightly previous operation mode of formula is the first dehumidifying heating mode of operation, described heat pump assembly is cut by described air conditioning control device It is changed to the first frost and reduces operation mode, on the other hand, if being switched to the 3rd frost to reduce the tightly previous of operation mode When operation mode is the second dehumidifying heating mode of operation, described heat pump assembly is switched to the second frost by described air conditioning control device Reduce operation mode.
CN201480018053.4A 2013-03-29 2014-03-04 Vehicle air conditioner Active CN105102249B (en)

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